Description
hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
hashcat hashcat
Default version status: unaffected
0 to ≤ 7.1.2affected
References
- https://github.com/hashcat/hashcat/issues/4739 ↗
- https://github.com/hashcat/hashcat ↗
- https://github.com/hashcat/hashcat/commit/93b55d37d3b2340013d4036f10181ddc67d44249 ↗
- https://github.com/hashcat/hashcat/blob/v7.1.2/src/filehandling.c#L1032-L1060 ↗
- https://www.vulncheck.com/advisories/hashcat-through-off-by-one-out-of-bounds-heap-write-in-fgetl ↗