CyberRota Analysis
AI-GeneratedThe diff3 tool in GNU diffutils is vulnerable to a heap-based buffer overflow caused by signed integer overflows during line-mapping calculations, which can lead to out-of-bounds writes when processing crafted diff outputs. This vulnerability could allow an attacker to crash the application or potentially execute arbitrary code, depending on the environment, if they can control the diff output. Organizations using diff3 in environments where untrusted input may be processed should prioritize this issue, despite maintainers downplaying its severity.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment. This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.