CyberRota Analysis
AI-GeneratedThe vulnerability arises from a heap-based buffer overflow in the run_utility() function, where command-line arguments are improperly handled, leading to potential out-of-bounds writes. This flaw can be exploited by local attackers to cause memory corruption, resulting in process aborts and denial of service. Organizations using affected products should prioritize patching this vulnerability to mitigate risks associated with local exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
entr is vulnerable to Heap-based buffer overflow in run_utility() function. The function allocates a fixed-size heap buffer using malloc(ARG_MAX) and copies command-line arguments into it. It advances the destination pointer based on the return value of strlcpy(), which returns the total length of the source string rather than the number of bytes written. When the buffer is exactly filled, the remaining size underflows as an unsigned size_t, causing subsequent copies to write out of bounds. This can be triggered by supplying command-line arguments whose combined length fills the buffer, or via the /_ substitution feature which expands a short token into a longer pathname at runtime. The local attacker can cause memory corruption, process abort, and denial of service. This issue was fixed in commit 2467fe0