The getgrouplist function in the GNU C library (glibc) before version 2.3.5, when invoked with a zero argument, writes to the passed pointer even if the specified array size is zero, leading to a buffer overflow and potentially allowing attackers to corrupt memory.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://sourceware.org/bugzilla/show_bug.cgi?id=661 | patch third party advisory issue tracking |
| http://www.securityfocus.com/bid/107871 | vdb entry |
| https://support.f5.com/csp/article/K12740406 |