[Precogs Alert] Buffer Overflow detected (CWE-120, Risk: Critical)#7
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rajnishprecogs wants to merge 1 commit intomainfrom
Open
[Precogs Alert] Buffer Overflow detected (CWE-120, Risk: Critical)#7rajnishprecogs wants to merge 1 commit intomainfrom
rajnishprecogs wants to merge 1 commit intomainfrom
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Vulnerability Details
src/simple_examples/explore_me.cppExplanation:
The function ExploreSimpleChecks calls trigger_global_buffer_overflow with a user-controlled string parameter 'c' if certain conditions on 'a' and 'b' are met and if 'c' equals 'Attacker'. The function name 'trigger_global_buffer_overflow' strongly suggests that it performs an unsafe operation that can cause a global buffer overflow, likely using the input string 'c'. If this function performs unchecked memory operations (such as copying 'c' into a fixed-size global buffer without bounds checking), an attacker could exploit this by providing a specially crafted string to cause a buffer overflow, potentially leading to arbitrary code execution, denial of service, or data corruption. The conditions on 'a' and 'b' are easily satisfiable by an attacker who controls the inputs, and the string comparison is trivial to bypass.
attackScenario: An attacker supplies 'a' = 20000, 'b' = 2000000, and 'c' = 'Attacker' (or a string that passes the check if the comparison is not strict), causing the function to call trigger_global_buffer_overflow with attacker-controlled data. If trigger_global_buffer_overflow copies 'c' into a global buffer without proper bounds checking, this results in a buffer overflow, allowing the attacker to overwrite adjacent memory and potentially execute arbitrary code.
potentialImpact: This vulnerability can lead to remote code execution (compromising Confidentiality, Integrity, and Availability), denial of service, or data corruption, depending on the context and privileges of the process.
Please review and address the issue accordingly.