GLSA 201408-06: libpng: Multiple vulnerabilities
| Severity: | normal |
| Title: | libpng: Multiple vulnerabilities |
| Date: | 08/14/2014 |
| Bugs: | , |
| ID: | 201408-06 |
Synopsis
Multiple vulnerabilities have been discovered in libpng which can allow a remote attacker to cause a Denial of Service condition.Background
libpng is a standard library used to process PNG (Portable Network Graphics) images. It is used by several programs, including web browsers and potentially server processes.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| media-libs/libpng | < 1.6.10 | >= 1.6.10 | All supported architectures |
Description
The png_push_read_chunk function in pngpread.c in the progressive decoder enters an infinite loop, when it encounters a zero-length IDAT chunk. In addition certain integer overflows have been detected and corrected.
The 1.2 branch is not affected by these vulnerabilities.
Impact
A remote attacker could entice a user to open a specially crafted PNG file using an application linked against libpng, possibly resulting in Denial of Service.
Workaround
There is no known workaround at this time.
Resolution
All libpng users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.6.10"
Users with current installs in the 1.5 branch should also upgrade this using:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.5.18:1.5"
Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.