CyberRota Analysis
AI-GeneratedThe CPython bytecode parser in radare2 versions prior to 6.2.0 is vulnerable to heap memory corruption due to improper handling of oversized string lengths in .pyc files. This flaw can lead to denial of service and potentially arbitrary code execution, although the latter has not been confirmed. Users of radare2, particularly those handling untrusted .pyc files, should prioritize upgrading to version 6.2.0 to mitigate these risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's CPython bytecode .pyc marshal parser was vulnerable because the CPython marshal readers accepted a 32-bit string length without rejecting values that overflow the size-plus-one allocation. The vulnerability is triggered by opening or inspecting a crafted .pyc file through r2 or rabin2. A length of 0xffffffff wrapped the allocation to zero before the common byte reader wrote attacker-controlled data and fill bytes beyond the heap allocation. This can cause heap memory corruption and denial of service; arbitrary code execution is possible but has not been demonstrated. This issue is fixed in version 6.2.0.
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