1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200906-01 / libpng |
| Release Date | June 27, 2009 |
| Latest Revision | June 27, 2009: 01 |
| Impact | low |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| media-libs/libpng | < 1.2.37 | >= 1.2.37 | All supported architectures |
Related bugreports: #272970
A vulnerability has been discovered in libpng that allows for information disclosure.
libpng is the official PNG reference library used to read, write and manipulate PNG images.
Jeff Phillips discovered that libpng does not properly parse 1-bit interlaced images with width values that are not divisible by 8, which causes libpng to include uninitialized bits in certain rows of a PNG file.
A remote attacker might entice a user to open a specially crafted PNG file, possibly resulting in the disclosure of sensitive memory portions.
There is no known workaround at this time.
All libpng users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.37" |