how to fix null dereference in java fortify

Extended Description NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions. ; Fix #308: Status color of tests in left frame; Fix #284: Enhance TEAM Engine to evaluate if core conformance classes are configured Copy link. A password reset link will be sent to you by email. Find centralized, trusted content and collaborate around the technologies you use most. About an argument in Famine, Affluence and Morality. . The program can potentially dereference a null-pointer, thereby raising a NullPointerException. Most null pointer issues result in general software reliability problems, but if attackers can intentionally trigger a null pointer dereference, they can use the resulting exception to bypass security logic or to cause the application to reveal debugging information that will be valuable in planning subsequent attacks. Error Handling (ERR), SEI CERT C Coding Standard - Guidelines 50. It works under 64-bit systems in Windows, Linux and macOS environments, and can analyze source code intended for 32-bit, 64-bit and embedded ARM platforms. CWE - CWE-252: Unchecked Return Value (4.10) - Mitre Corporation How do I generate random integers within a specific range in Java? <. The program can potentially dereference a null pointer, thereby raising "Seven Pernicious Kingdoms: A Taxonomy of Software Security Errors". [1] J. Viega, G. McGraw Building Secure Software Addison-Wesley, [2] Standards Mapping - Common Weakness Enumeration, [3] Standards Mapping - Common Weakness Enumeration Top 25 2019, [4] Standards Mapping - Common Weakness Enumeration Top 25 2020, [5] Standards Mapping - Common Weakness Enumeration Top 25 2021, [6] Standards Mapping - Common Weakness Enumeration Top 25 2022, [7] Standards Mapping - DISA Control Correlation Identifier Version 2, [8] Standards Mapping - General Data Protection Regulation (GDPR), [9] Standards Mapping - NIST Special Publication 800-53 Revision 4, [10] Standards Mapping - NIST Special Publication 800-53 Revision 5, [11] Standards Mapping - OWASP Top 10 2004, [12] Standards Mapping - OWASP Application Security Verification Standard 4.0, [13] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1, [14] Standards Mapping - Security Technical Implementation Guide Version 3.1, [15] Standards Mapping - Security Technical Implementation Guide Version 3.4, [16] Standards Mapping - Security Technical Implementation Guide Version 3.5, [17] Standards Mapping - Security Technical Implementation Guide Version 3.6, [18] Standards Mapping - Security Technical Implementation Guide Version 3.7, [19] Standards Mapping - Security Technical Implementation Guide Version 3.9, [20] Standards Mapping - Security Technical Implementation Guide Version 3.10, [21] Standards Mapping - Security Technical Implementation Guide Version 4.1, [22] Standards Mapping - Security Technical Implementation Guide Version 4.2, [23] Standards Mapping - Security Technical Implementation Guide Version 4.3, [24] Standards Mapping - Security Technical Implementation Guide Version 4.4, [25] Standards Mapping - Security Technical Implementation Guide Version 4.5, [26] Standards Mapping - Security Technical Implementation Guide Version 4.6, [27] Standards Mapping - Security Technical Implementation Guide Version 4.7, [28] Standards Mapping - Security Technical Implementation Guide Version 4.8, [29] Standards Mapping - Security Technical Implementation Guide Version 4.9, [30] Standards Mapping - Security Technical Implementation Guide Version 4.10, [31] Standards Mapping - Security Technical Implementation Guide Version 4.11, [32] Standards Mapping - Security Technical Implementation Guide Version 5.1, [33] Standards Mapping - Web Application Security Consortium 24 + 2, [34] Standards Mapping - Web Application Security Consortium Version 2.00, desc.controlflow.cpp.missing_check_against_null. A method returning a List should per convention never return null but an empty List as default "empty" value. Common Weakness Enumeration. Abstract. CODETOOLS-7900078 Fortify: Analize and fix "Redundant Null Check" issues. Thank you for visiting OWASP.org. <, [REF-962] Object Management Group (OMG). I'm using "HP Fortify v3.50" on a java project and I find lots of false positive on "Null Dereference", because Fortify doesn't see the control against null is in another method. including race conditions and simple programming omissions. An unexpected return value could place the system in a state that could lead to a crash or other unintended behaviors. More specific than a Pillar Weakness, but more general than a Base Weakness. This information is often useful in understanding where a weakness fits within the context of external information sources. The modules cover the full breadth and depth of topics for PCI Section 6.5 compliance and the items that are important for secure software development. Category:Vulnerability. chain: unchecked return value can lead to NULL dereference. This can cause DoDangerousOperation() to operate on an unexpected value. I'm using "HP Fortify v3.50" on a java project and I find lots of false positive on "Null Dereference", because Fortify doesn't see the control against null is in another method. Connection String Parameter Pollution. which best describes the pillbugs organ of respiration; jesse pearson obituary; ion select placeholder color; best fishing spots in dupage county Unless otherwise specified, all content on the site is Creative Commons Attribution-ShareAlike v4.0 and provided without warranty of service or accuracy. What does this means in this context? if statement; and unlock when it has finished. "Automated Source Code Reliability Measure (ASCRM)". Dynamic analysis is a great way to uncover error-handling flaws. String itemName = request.getParameter(ITEM_NAME); String itemName = request.Item(ITEM_NAME); Dim MyFile As New FileStream("myfile.txt", FileMode.Open, FileAccess.Read, FileShare.Read), void host_lookup(char *user_supplied_addr){, Chain: The return value of a function returning a pointer is not checked for success (, Chain: sscanf() call is used to check if a username and group exists, but the return value of sscanf() call is not checked (. set them to NULL once they are freed: If you are working with a multi-threaded or otherwise asynchronous Fortify Software in partnership with FindBugs has launched the Java Open Review (JOR) Project. large number of packets leads to NULL dereference, packet with invalid error status value triggers NULL dereference, Chain: race condition for an argument value, possibly resulting in NULL dereference. will be valuable in planning subsequent attacks. These may be for specific named Languages, Operating Systems, Architectures, Paradigms, Technologies, or a class of such platforms. how many points did klay thompson score last night, keller williams luxury listing presentation, who died in the manchester united plane crash, what does the bible say about feeding birds, Penticton Regional Hospital Diagnostic Imaging, Clark Atlanta University Music Department, is the character amos decker black or white. High severity (5.3) NULL Pointer Dereference in java-1.8.-openjdk-accessibility | CVE-2021-35578 Ensure that you account for all possible return values from the function. Copyright 20062023, The MITRE Corporation. clones. cmd=cmd.trim(); Null-pointer dereference issues can occur through a number of flaws, Null Dereference | OWASP Foundation What fortify do not like is the fact that you initialize the variable with null first, without condition, and then change it. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? A Community-Developed List of Software & Hardware Weakness Types, Technical Impact: DoS: Crash, Exit, or Restart, Technical Impact: Execute Unauthorized Code or Commands; Read Memory; Modify Memory. Implementation: Proper sanity checks at implementation time can This weakness can be detected using dynamic tools and techniques that interact with the software using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. Demonstration method: public string DemonstrateNullConditional () { var maybeNull = GetSomethingThatMayBeNull (); if (maybeNull?.InstanceMember == "I wasn't null afterall.") { return maybeNull.OtherMember; } return "Oh, it was null"; } in the above example, the if clause is essentially equivalent to: Depending upon the type and size of the application, it may be possible to free memory that is being used elsewhere so that execution can continue. In addition, relationships such as PeerOf and CanAlsoBe are defined to show similar weaknesses that the user may want to explore. (where the weakness is a quality issue that might indirectly make it easier to introduce security-relevant weaknesses or make them more difficult to detect). <, [REF-1031] "Null pointer / Null dereferencing". When an object has been found, the requested method is called ( toString in this case). CWE is a community-developed list of software and hardware weakness types. Anything that requires dynamic memory should be buried inside an RAII object that releases the memory when it goes out of scope. For example, if a coder subclasses SecureRandom and returns a non-random value, the contract is violated. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') -Wnull-dereference. Is there a single-word adjective for "having exceptionally strong moral principles"? Network Operations Management (NNM and Network Automation). The program can dereference a null-pointer because it does not check the return value of a function that might return null. Not the answer you're looking for? process, unless exception handling (on some platforms) is invoked, and int *ptr; int *ptr; After the declaration of an integer pointer variable, we store the address of 'x' variable to the pointer variable 'ptr'. Addison Wesley. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. rev2023.3.3.43278. The software's operation may slow down, but it should not become unstable, crash, or generate incorrect results. The program can dereference a null-pointer because it does not check the return value of a function that might return null. Explanation Null-pointer errors are usually the result of one or more programmer assumptions being violated. Variant level weaknesses typically describe issues in terms of 3 to 5 of the following dimensions: behavior, property, technology, language, and resource. Explanation Null-pointer errors are usually the result of one or more programmer assumptions being violated. Server allows remote attackers to cause a denial of service (crash) via malformed requests that trigger a null dereference. For example, the owner may be momentarily null even if there are threads trying to acquire the lock but have not yet done so . The program can potentially dereference a null-pointer, thereby raising a NullPointerException. If it does not exist, the program cannot perform the desired behavior so it doesn't matter whether I handle the error or allow the program to die dereferencing a null value." Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers), Minimising the environmental effects of my dyson brain. When this method is called by a thread that is not the owner, the return value reflects a best-effort approximation of current lock status. John Aldridge Hillsborough Nc Obituary, NULL is used as though it pointed to a valid memory area. Network monitor allows remote attackers to cause a denial of service (crash) via a malformed RADIUS packet that triggers a null dereference. If I had to guess, the tool you're using is complaining about our use of Math.random() but we don't rely on it being cryptographically secure. The program might dereference a null-pointer because it does not check the return value of a function that might return null. String URL = intent.getStringExtra("URLToOpen"); race condition causes a table to be corrupted if a timer activates while it is being modified, leading to resultant NULL dereference; also involves locking. PS: Yes, Fortify should know that these properties are secure. . logic or to cause the application to reveal debugging information that can be prevented. In this paper we discuss some of the challenges of using a null dereference analysis in . PDF TOOL EVALUATION REPORT: FORTIFY - Carnegie Mellon University Time arrow with "current position" evolving with overlay number, Doubling the cube, field extensions and minimal polynoms. Null-pointer dereferences, while common, can generally be found and corrected in a simple way. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to similar items that may exist at higher and lower levels of abstraction. What is the difference between public, protected, package-private and private in Java? When a reference has the value null, dereferencing . ssh component for Go allows clients to cause a denial of service (nil pointer dereference) against SSH servers. Two common programmer assumptions are "this function call can never fail" and "it doesn't matter if this function call fails". JavaDereference before null check Bny Mellon Layoffs 2021, When you assign the value of 10 on the second line, your value of 10 is written into the memory location referred to by x. Ie, do you want to know how to fix a vulnerability (this is well-covered, and you should do some research before asking a more concrete question), or do you want to know how to suppress a false-positive (this would likely be off-topic, you should just ask the vendor)? But, when you try to declare a reference type, something different happens. "24 Deadly Sins of Software Security". For example, if the program calls a function to drop privileges but does not check the return code to ensure that privileges were successfully dropped, then the program will continue to operate with the higher privileges. How do I read / convert an InputStream into a String in Java? vegan) just to try it, does this inconvenience the caterers and staff? Use of the Common Weakness Enumeration (CWE) and the associated references from this website are subject to the Terms of Use. null dereference fortify fix java - Zirpp.org Expressions (EXP), https://samate.nist.gov/SSATTM_Content/papers/Seven%20Pernicious%20Kingdoms%20-%20Taxonomy%20of%20Sw%20Security%20Errors%20-%20Tsipenyuk%20-%20Chess%20-%20McGraw.pdf, https://www.microsoftpressstore.com/store/writing-secure-code-9780735617223, Cybersecurity and Infrastructure Security Agency, Homeland Security Systems Engineering and Development Institute, Detect and handle standard library errors, The CERT Oracle Secure Coding Standard for Java (2011), Provided Demonstrative Example and suggested CERT reference, updated Common_Consequences, Relationships, Other_Notes, Taxonomy_Mappings, updated Background_Details, Demonstrative_Examples, Description, Observed_Examples, Other_Notes, Potential_Mitigations, updated Common_Consequences, Demonstrative_Examples, References, updated Demonstrative_Examples, Potential_Mitigations, References, updated Demonstrative_Examples, References, updated Common_Consequences, Demonstrative_Examples, Relationships, Taxonomy_Mappings, updated Common_Consequences, References, Relationships, updated Demonstrative_Examples, Potential_Mitigations, updated Demonstrative_Examples, Relationships, Taxonomy_Mappings, updated Applicable_Platforms, References, Relationships, Taxonomy_Mappings, updated References, Relationships, Taxonomy_Mappings, updated Demonstrative_Examples, Observed_Examples, Relationships, Weakness_Ordinalities. Fix: Added if block around the close call at line 906 to keep this from being . I'll update as soon as I have more information thx Thierry. Asking for help, clarification, or responding to other answers. CWE is sponsored by the U.S. Department of Homeland Security (DHS) Cybersecurity and Infrastructure Security Agency (CISA) and managed by the Homeland Security Systems Engineering and Development Institute (HSSEDI) which is operated by The MITRE Corporation (MITRE). There are at least three flavors of this problem: check-after-dereference, dereference-after-check, and dereference-a Here is a code snippet: getAuth() should not return null. Insecure Randomness | OWASP Foundation Why are trials on "Law & Order" in the New York Supreme Court? There are at least three flavors of this problem: check-after-dereference, dereference-after-check, and dereference-after-store. This table shows the weaknesses and high level categories that are related to this weakness. Only iterating over the list would be fine. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If you trigger an unhandled exception or similar error that was discovered and handled by the application's environment, it may still indicate unexpected conditions that were not handled by the application itself. Team Collaboration and Endpoint Management. If an attacker can create a smaller file, the program will recycle the remainder of the data from the previous user and treat it as though it belongs to the attacker. environment so that cmd is not defined, the program throws a null When to use LinkedList over ArrayList in Java? More information is available Please select a different filter. View - a subset of CWE entries that provides a way of examining CWE content. As a matter of fact, any miss in dealing with null cannot be identified at compile time and results in a NullPointerException at runtime.. Poor code quality leads to unpredictable behavior. Page 183. More specific than a Base weakness. 5.2 (2018-02-26) Fix #298: Fortify Issue: Unreleased Resource; Fix #286: HTML 5.0 Report: Add method and class of the failing test; Fix #287: Add cite:testSuiteType earl property to identify the test-suite is implemented using ctl or testng. This also passes Fortify's scan: Thanks for contributing an answer to Stack Overflow! Enter the username or e-mail you used in your profile. Synopsys-sigcoverity-common-api A challenge mostly of GitHub. It is not uncommon for Java programmers to misunderstand read() and related methods that are part of many java.io classes. PS: Yes, Fortify should know that these properties are secure. This table specifies different individual consequences associated with the weakness. If Fortify SCA can be put into a pipeline, it can also be hooked to fix issues automatically (although care must be taken to avoid situations like the Debian OpenSSL PRNG vulnerability, which was not a vulnerability until a security-focused static code analyzer suggested a fix that ended up being July 2019. pylint. When to use LinkedList over ArrayList in Java? Wikipedia. For example, In the ClassWriter class, a call is made to the set method of an Item object. The following VB.NET code does not check to make sure that it has read 50 bytes from myfile.txt. a NullPointerException. After the attack, the programmer's assumptions seem flimsy and poorly founded, but before an attack many programmers would defend their assumptions well past the end of their lunch break. Identify error conditions that are not likely to occur during normal usage and trigger them. I have a solution to the Fortify Path Manipulation issues. When this happens, CWE refers to X as "primary" to Y, and Y is "resultant" from X. CODETOOLS-7900080 Fortify: Analize and fix If I had to guess, the tool you're using is complaining about our use of Math.random() but we don't rely on it being cryptographically secure. Removed issues. Warn if the compiler detects paths that trigger erroneous or undefined behavior due to dereferencing a null pointer. What is the correct way to screw wall and ceiling drywalls? Just about every serious attack on a software system begins with the violation of a programmer's assumptions. The unary prefix ! 10 Avoiding Attempt to Dereference Null Object Errors - YouTube 0:00 / 8:00 10 Avoiding Attempt to Dereference Null Object Errors 4,029 views Oct 22, 2014 In this episode we look at 3 common. 2019-07-15. Notice that the return value is not checked before the memcpy operation (CWE-252), so -1 can be passed as the size argument to memcpy() (CWE-805). (Java) and to compare it with existing bug reports on the tool to test its efficacy. [REF-62] Mark Dowd, John McDonald Fixed by #302 Contributor cmheazel on Jan 7, 2018 cmheazel added the Status:Pull-Request-Issued label on Jan 9, 2018 cmheazel mentioned this issue on Feb 22, 2018 Fortify-Issue-300 Null Dereference issues #302 Merged This Android application has registered to handle a URL when sent an intent: The application assumes the URL will always be included in the intent. It serves as a common language, a measuring stick for security tools, and as a baseline for weakness identification, mitigation, and prevention efforts. -Wnull-dereference. Monitor the software for any unexpected behavior. The Likelihood provides information about how likely the specific consequence is expected to be seen relative to the other consequences in the list. Mature pregnant Mom ass fucked by horny Stepson, Perfect Pussy cant Stop Squirting all over herself, Shokugeki no Soma Todokoro Megumi Hard Sex, naughty teen in sexy lace lingerie dancing and seducing boy sucking him and riding him hard amateur, Slutty wife Jayla de Angelis gets assfucked by the hung doctor in POV. If you preorder a special airline meal (e.g. Apple. <, [REF-1033] "NULL Pointer Dereference [CWE-476]". caught at night in PUBLIC POOL!!! Generally, null variables, references and collections are tricky to handle in Java code.They are not only hard to identify but also complex to deal with. 3 FortifyJava 8 - Fortify : Null dereference for Java 8 Java 8 fortify Null Dereference null When working on a few Null Dereferencing warnings from Fortify, I was wondering if we could use standard .Net CodeContracts clauses to help Fortify in figuring out the exceptions. Class - a weakness that is described in a very abstract fashion, typically independent of any specific language or technology. (Generated from version 2022.1.0.0007 of the Fortify Secure Coding Rulepacks) Exceptions. Class level weaknesses typically describe issues in terms of 1 or 2 of the following dimensions: behavior, property, and resource. What is a NullPointerException, and how do I fix it? Whenever we use the "return early" code pattern, Fortify is not able to understand it and raises a "possible null dereference" warning. This behavior makes it important for programmers to examine the return value from read() and other IO methods to ensure that they receive the amount of data they expect. It is impossible for the program to perform a graceful exit if required. Disadvantages Of Group Learning, The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. Base level weaknesses typically describe issues in terms of 2 or 3 of the following dimensions: behavior, property, technology, language, and resource. Connection conn = null; Boolean myConn = false; try { if (conn == null) { conn = DatabaseUtil.getConnection (); myConn = true; } result = DbClass.getObject (conn, otherParameters); }catch (DatabaseException de) { throw de; }catch (SQLException sqle) { throw new DatabaseException ("Error Message"); }finally { if (myConn && conn != null) { try { The Java VM sets them so, as long as Java isn't corrupted, you're safe. -Wnonnull-compare is included in -Wall. Fix : Analysis found that this is a false positive result; no code changes are required. The Optional class contains methods that can be used to make programs shorter and more intuitive [].. For Benchmark, we've seen it report it both ways. It is the same class, @SnakeDoc I'm guessing the OP messed up their. how to fix null dereference in java fortify "Security problems caused by dereferencing null . ASCSM-CWE-252-resource. Follows a very simple code sample that should reproduce the issue: In this simple excerpt Fortify complains that "typedObj" can be null in the return statement. The call cr.getPassword() may return null value in the com.hazelcast.client.connection.nio.ClientConnectionManagerImpl.encodeAuthenticationRequest(boolean, SerializationService, ClientPrincipal) method. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? One can also violate the caller-callee contract from the other side. Thanks for the input! String os = System.getProperty ("os.name"); if (os.equalsIgnoreCase ("Windows 95") ) System.out.println ("Not supported"); Network monitor allows remote attackers to cause a denial of service (crash) or execute arbitrary code via malformed packets that cause a NULL pointer dereference. This MemberOf Relationships table shows additional CWE Categories and Views that reference this weakness as a member. NULL Pointer Dereference in java-1.8.0-openjdk-accessibility | CVE-2021 In both of these situations, fgets() signals that something unusual has happened by returning NULL, but in this code, the warning will not be noticed. NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Browse other questions tagged java fortify or ask your own question. Network monitor allows remote attackers to cause a denial of service (crash) via a malformed Q.931, which triggers a null dereference. Fortify Null Dereference in Java; Chain Validation test; Apigee issue with PUT and POST operation; Query annotation not working with and / or operators; org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class Web-application scanning, also known as dynamic analysis, is a type of test that runs while an application is in a development environment. The following function attempts to acquire a lock in order to perform operations on a shared resource. [1] Standards Mapping - Common Weakness Enumeration, [2] Standards Mapping - Common Weakness Enumeration Top 25 2019, [3] Standards Mapping - Common Weakness Enumeration Top 25 2020, [4] Standards Mapping - Common Weakness Enumeration Top 25 2021, [5] Standards Mapping - Common Weakness Enumeration Top 25 2022, [6] Standards Mapping - DISA Control Correlation Identifier Version 2, [7] Standards Mapping - General Data Protection Regulation (GDPR), [8] Standards Mapping - NIST Special Publication 800-53 Revision 4, [9] Standards Mapping - NIST Special Publication 800-53 Revision 5, [10] Standards Mapping - OWASP Top 10 2004, [11] Standards Mapping - OWASP Application Security Verification Standard 4.0, [12] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1, [13] Standards Mapping - Security Technical Implementation Guide Version 3.1, [14] Standards Mapping - Security Technical Implementation Guide Version 3.4, [15] Standards Mapping - Security Technical Implementation Guide Version 3.5, [16] Standards Mapping - Security Technical Implementation Guide Version 3.6, [17] Standards Mapping - Security Technical Implementation Guide Version 3.7, [18] Standards Mapping - Security Technical Implementation Guide Version 3.9, [19] Standards Mapping - Security Technical Implementation Guide Version 3.10, [20] Standards Mapping - Security Technical Implementation Guide Version 4.1, [21] Standards Mapping - Security Technical Implementation Guide Version 4.2, [22] Standards Mapping - Security Technical Implementation Guide Version 4.3, [23] Standards Mapping - Security Technical Implementation Guide Version 4.4, [24] Standards Mapping - Security Technical Implementation Guide Version 4.5, [25] Standards Mapping - Security Technical Implementation Guide Version 4.6, [26] Standards Mapping - Security Technical Implementation Guide Version 4.7, [27] Standards Mapping - Security Technical Implementation Guide Version 4.8, [28] Standards Mapping - Security Technical Implementation Guide Version 4.9, [29] Standards Mapping - Security Technical Implementation Guide Version 4.10, [30] Standards Mapping - Security Technical Implementation Guide Version 4.11, [31] Standards Mapping - Security Technical Implementation Guide Version 5.1, [32] Standards Mapping - Web Application Security Consortium 24 + 2, [33] Standards Mapping - Web Application Security Consortium Version 2.00, desc.controlflow.dotnet.missing_check_against_null, desc.controlflow.java.missing_check_against_null, (Generated from version 2022.4.0.0009 of the Fortify Secure Coding Rulepacks), Fortify Taxonomy: Software Security Errors.

how to fix null dereference in java fortify 2023