Ignoring a method's return value can cause the program to overlook unexpected states and conditions. This way you initialize sortName only once, and explicitely show that a null value is the right one in some cases, and not that you forgot some cases, leading to a var staying null while it is unexpected. How do I read / convert an InputStream into a String in Java? 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)? The different Modes of Introduction provide information about how and when this weakness may be introduced. Compliance Failure. Time arrow with "current position" evolving with overlay number, Doubling the cube, field extensions and minimal polynoms. Microsoft Press. This table specifies different individual consequences associated with the weakness. Most null pointer NIST Workshop on Software Security Assurance Tools Techniques and Metrics. There is no guarantee that the amount of data returned is equal to the amount of data requested. Apple. Why is this sentence from The Great Gatsby grammatical? What is the purpose of this D-shaped ring at the base of the tongue on my hiking boots? Null-pointer exceptions usually occur when one or more of the programmer's assumptions is violated. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? Convert byte[] to String (text data) The below example convert a string to a byte array or byte[] and vice versa. What are the differences between a HashMap and a Hashtable in Java? 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. (where the weakness exists independent of other weaknesses), [REF-6] Katrina Tsipenyuk, Brian Chess More specific than a Base weakness. rev2023.3.3.43278. clones. While there NIST. There are some Fortify links at the end of the article for your reference. What video game is Charlie playing in Poker Face S01E07? Asking for help, clarification, or responding to other answers. To learn more, see our tips on writing great answers. High severity (3.7) NULL Pointer Dereference in java-1.8.-openjdk-accessibility | CVE-2019-2962 The choice could be made to use a language that is not susceptible to these issues. 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. Dereference before null check. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to similar items that may exist at higher and lower levels of abstraction. Whenever we use the "return early" code pattern, Fortify is not able to understand it and raises a "possible null dereference" warning. a NULL pointer dereference would then occur in the call to strcpy(). Category - a CWE entry that contains a set of other entries that share a common characteristic. Share Improve this answer Follow edited Jun 4, 2019 at 17:08 answered Jun 4, 2019 at 17:01 Thierry 5,170 33 39 Unless otherwise specified, all content on the site is Creative Commons Attribution-ShareAlike v4.0 and provided without warranty of service or accuracy. But the stream and reader classes do not consider it unusual or exceptional if only a small amount of data becomes available. It serves as a common language, a measuring stick for security tools, and as a baseline for weakness identification, mitigation, and prevention efforts. 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 (. <. junio 12, 2022. abc news anchors female philadelphia . So mark them as Not an issue and move on. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The best way to fix this is not returning, @MarkRotteveel those are from different classes, is there a way to return an empty list that will not cause null dereference? But, when you try to declare a reference type, something different happens. Follow Up: struct sockaddr storage initialization by network format-string. Expressions (EXP), Weaknesses in the 2019 CWE Top 25 Most Dangerous Software Errors, Weaknesses in the 2021 CWE Top 25 Most Dangerous Software Weaknesses, Weaknesses in the 2020 CWE Top 25 Most Dangerous Software Weaknesses, Weaknesses in the 2022 CWE Top 25 Most Dangerous Software Weaknesses, https://samate.nist.gov/SSATTM_Content/papers/Seven%20Pernicious%20Kingdoms%20-%20Taxonomy%20of%20Sw%20Security%20Errors%20-%20Tsipenyuk%20-%20Chess%20-%20McGraw.pdf, https://cwe.mitre.org/documents/sources/TheCLASPApplicationSecurityProcess.pdf, https://en.wikipedia.org/wiki/Null_pointer#Null_dereferencing, https://developer.apple.com/documentation/code_diagnostics/undefined_behavior_sanitizer/null_reference_creation_and_null_pointer_dereference, https://www.immuniweb.com/vulnerability/null-pointer-dereference.html, Cybersecurity and Infrastructure Security Agency, Homeland Security Systems Engineering and Development Institute, Null Dereference (Null Pointer Dereference), updated Applicable_Platforms, Common_Consequences, Relationships, Other_Notes, Taxonomy_Mappings, Weakness_Ordinalities, updated Common_Consequences, Demonstrative_Examples, Other_Notes, Potential_Mitigations, Weakness_Ordinalities, updated Potential_Mitigations, Relationships, updated Demonstrative_Examples, Description, Detection_Factors, Potential_Mitigations, updated Demonstrative_Examples, Observed_Examples, Relationships, updated Related_Attack_Patterns, Relationships, updated Observed_Examples, Related_Attack_Patterns, Relationships, updated Relationships, Taxonomy_Mappings, White_Box_Definitions, updated Demonstrative_Examples, Observed_Examples, updated Alternate_Terms, Applicable_Platforms, Observed_Examples. Class level weaknesses typically describe issues in terms of 1 or 2 of the following dimensions: behavior, property, and resource. String os = System.getProperty ("os.name"); if (os.equalsIgnoreCase ("Windows 95") ) System.out.println ("Not supported"); There are at least three flavors of this problem: check-after-dereference, dereference-after-check, and dereference-a Suppress the warning (if Fortify allows that). Can archive.org's Wayback Machine ignore some query terms? matthew le nevez love child facebook; how to ignore a house on fire answer key twitter; who is depicted in this ninth century equestrian portrait instagram; wasilla accident report youtube; newark state of the city 2021 mail Is this from a fortify web scan, or from a static code analysis? This MemberOf Relationships table shows additional CWE Categories and Views that reference this weakness as a member. An API is a contract between a caller and a callee. The program can potentially dereference a null-pointer, thereby causing a segmentation fault. The majority of true, relevant defects identified by Prevent were related to potential null dereference. Connection String Parameter Pollution. expedia advert music 2021; 3rd florida infantry regiment; sheetz spiked slushies ingredients : Fortify: The method processMessage() in VET360InboundProcessService.java can crash the program by dereferencing a null pointer on line 197. 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 { I'd prefer to get rid of the finding vs. just write it off. Null-pointer dereferences, while common, can generally be found and Null dereference is a common type of runtime failure in Java programs, and it is necessary to verify whether a dereference in the program is safe. 2016-01. PVS-Studio is a tool for detecting bugs and security weaknesses in the source code of programs, written in C, C++, C# and Java. David LeBlanc. 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. What fortify do not like is the fact that you initialize the variable with null first, without condition, and then change it. Fix : Analysis found that this is a false positive result; no code changes are required. Most errors and unusual events in Java result in an exception being thrown. 1st Edition. 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. The SAST tool used was Fortify SCA, (and obviously if httpInputStream is different from null, to avoid a possible Null Dereference by invoking the close() method). steps will go a long way to ensure that null-pointer dereferences do not Alle links, video's en afbeeldingen zijn afkomstig van derden. Network monitor allows remote attackers to cause a denial of service (crash) via a malformed RADIUS packet that triggers a null dereference. Since the code does not check the return value from gethostbyaddr (CWE-252), a NULL pointer dereference (CWE-476) would then occur in the call to strcpy(). [REF-62] Mark Dowd, John McDonald I believe this particular behavior is a gap in the Fortify analyzer implementation, as all other static analysis tools seem to understand the code flow and will not complain about potential null references in this case. I know we could change the code to remove it, but that would be changing the structure of our code because of a problem in the tool. Anyone have experience with this one? This argument ignores three important considerations: The following examples read a file into a byte array. 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. "24 Deadly Sins of Software Security". If an attacker can force the function to fail or otherwise return a value that is not expected, then the subsequent program logic could lead to a vulnerability, because the product is not in a state that the programmer assumes. How do I generate random integers within a specific range in Java? This table specifies different individual consequences associated with the weakness. Poor code quality leads to unpredictable behavior. [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.
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