A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
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 |
|---|---|
| http://www.libpng.org/pub/png/apps/pngcheck.html | third party advisory |
| https://www.debian.org/security/2022/dsa-5300 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2022/12/msg00024.html | third party advisory mailing list |