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A community-developed list of SW & HW weaknesses that can become vulnerabilities
CWE-463: Deletion of Data Structure Sentinel
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Description The accidental deletion of a data-structure sentinel can cause serious programming logic problems.
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Extended Description
Often times data-structure sentinels are used to mark structure of the data structure. A common example of this is the null character at the end of strings. Another common example is linked lists which may contain a sentinel to mark the end of the list. It is dangerous to allow this type of control data to be easily accessible. Therefore, it is important to protect from the deletion or modification outside of some wrapper interface which provides safety.
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Common Consequences 👁 Section Help
This table specifies different individual consequences associated with the weakness. The Scope identifies the application security area that is violated, while the Impact describes the negative technical impact that arises if an adversary succeeds in exploiting this weakness. The Likelihood provides information about how likely the specific consequence is expected to be seen relative to the other consequences in the list. For example, there may be high likelihood that a weakness will be exploited to achieve a certain impact, but a low likelihood that it will be exploited to achieve a different impact.
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Potential Mitigations
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Relationships
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This table shows the weaknesses and high level categories that are related to this weakness. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to similar items that may exist at higher and lower levels of abstraction. In addition, relationships such as PeerOf and CanAlsoBe are defined to show similar weaknesses that the user may want to explore.
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Relevant to the view "Research Concepts" (View-1000)
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Relevant to the view "Software Development" (View-699)
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Modes Of Introduction 👁 Section Help
The different Modes of Introduction provide information about how and when this weakness may be introduced. The Phase identifies a point in the life cycle at which introduction may occur, while the Note provides a typical scenario related to introduction during the given phase.
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Applicable Platforms 👁 Section Help
This listing shows possible areas for which the given weakness could appear. These may be for specific named Languages, Operating Systems, Architectures, Paradigms, Technologies, or a class of such platforms. The platform is listed along with how frequently the given weakness appears for that instance.
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Demonstrative Examples Example 1 This example creates a null terminated string and prints it contents. (bad code)
Example Language: C
char *foo;
int counter; foo=calloc(sizeof(char)*10); for (counter=0;counter!=10;counter++) { foo[counter]='a';
printf("%s\n",foo); } The string foo has space for 9 characters and a null terminator, but 10 characters are written to it. As a result, the string foo is not null terminated and calling printf() on it will have unpredictable and possibly dangerous results. 👁 +
Weakness Ordinalities
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Memberships
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This MemberOf Relationships table shows additional CWE Categories and Views that reference this weakness as a member. This information is often useful in understanding where a weakness fits within the context of external information sources.
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Vulnerability Mapping Notes
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Taxonomy Mappings
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References
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Content History
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