A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a denial-of-service attack or other unspecified impact with a maliciously crafted GIF format file, related to an uncontrolled loop in the LZWReadByte function of the gifread.c file.
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://lists.debian.org/debian-lts-announce/2017/11/msg00042.html | mailing list |
| https://www.debian.org/security/2017/dsa-4058 | vendor advisory |
| https://sourceforge.net/p/optipng/bugs/69/ | third party advisory patch |
| https://security.gentoo.org/glsa/201801-02 | vendor advisory |