Gentoo: GLSA-200711-08: libpng: Multiple Denials of Service
Summary
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Gentoo Linux Security Advisory GLSA 200711-08 https://security.gentoo.org/
Severity: Normal Title: libpng: Multiple Denials of Service Date: November 07, 2007 Bugs: #195261 ID: 200711-08
Synopsis ======= Several vulnerabilities in libpng may allow a remote attacker to crash applications that handle untrusted images.
Background ========= libpng is a free ANSI C library used to process and manipulate PNG images.
Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/libpng < 1.2.21-r3 >= 1.2.21-r3
========== An off-by-one error when handling ICC profile chunks in the png_set_iCCP() function was discovered (CVE-2007-5266). George Cook and Jeff Phillips reported several errors in pngrtran.c, the use of logical instead of a bitwise functions and incorrect comparisons (CVE-2007-5268). Tavis Ormandy reported out-of-bounds read errors in several PNG chunk handling functions (CVE-2007-5269).
Impact ===== A remote attacker could craft an image that when processed or viewed by an application using libpng would cause the application to terminate abnormally.
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-1.2.21-r3"
References ========= [ 1 ] CVE-2007-5266 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5266 [ 2 ] CVE-2007-5268 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5268 [ 3 ] CVE-2007-5269 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5269
Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/200711-08
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 2007 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.
https://creativecommons.org/licenses/by-sa/2.5/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - iD8DBQFHMhzjuhJ+ozIKI5gRAvvcAJ9POnVZo+5eGaeH6xELJSZhC6eeuwCffECb KS8p+WDYlscGB/Ry4EVHkuc=nG1m -----END PGP SIGNATURE-----
Resolution
References
Availability
Concerns
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