| Name | CVE-2015-8540 |
| Description | Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-375-1, DSA-3443-1 |
| Debian Bugs | 807694 |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libpng | source | squeeze | 1.2.44-1+squeeze6 | DLA-375-1 | ||
| libpng | source | wheezy | 1.2.49-1+deb7u2 | DSA-3443-1 | ||
| libpng | source | jessie | 1.2.50-2+deb8u2 | DSA-3443-1 | ||
| libpng | source | (unstable) | (unfixed) | 807694 |
https://www.openwall.com/lists/oss-security/2015/12/10/6
https://sourceforge.net/p/libpng/bugs/244/
http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
Fixed in 1.0.66, 1.2.56, 1.4.19, and 1.5.26