drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in libpng
Name: |
Denial of Service in libpng |
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ID: |
200711-08 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mi, 7. November 2007, 21:19 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5266
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5268
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5269 |
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Applikationen: |
libpng |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200711-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: libpng: Multiple Denials of Service Date: November 07, 2007 Bugs: #195261 ID: 200711-08
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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
Description ===========
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:
http://security.gentoo.org/glsa/glsa-200711-08.xml
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 http://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.
http://creativecommons.org/licenses/by-sa/2.5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFHMhzjuhJ+ozIKI5gRAvvcAJ9POnVZo+5eGaeH6xELJSZhC6eeuwCffECb KS8p+WDYlscGB/Ry4EVHkuc= =nG1m -----END PGP SIGNATURE----- -- gentoo-announce@gentoo.org mailing list
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