The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a crafted BMP image.
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://sourceforge.net/p/optipng/bugs/59/ | patch |
| http://www.openwall.com/lists/oss-security/2016/04/04/2 | third party advisory mailing list |
| http://lists.opensuse.org/opensuse-updates/2016-04/msg00065.html | third party advisory vendor advisory |
| http://www.debian.org/security/2016/dsa-3546 | third party advisory vendor advisory |
| http://www.ubuntu.com/usn/USN-2951-1 | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2016-04/msg00061.html | third party advisory vendor advisory |
| http://www.securityfocus.com/archive/1/537972/100/0/threaded | mailing list |
| http://seclists.org/fulldisclosure/2016/Apr/15 | third party advisory mailing list |
| https://security.gentoo.org/glsa/201608-01 | vendor advisory |
| http://packetstormsecurity.com/files/136553/Optipng-Invalid-Write.html | exploit |