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Gentoo Linux Security Advisory GLSA 201010-01 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Libpng: Multiple vulnerabilities |
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Date: October 05, 2010 |
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Bugs: #307637, #324153, #335887 |
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ID: 201010-01 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities in libpng might lead to privilege escalation |
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or a Denial of Service. |
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|
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Background |
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========== |
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|
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libpng is a standard library used to process PNG (Portable Network |
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Graphics) images. It is used by several programs, including web |
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browsers and potentially server processes. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 media-libs/libpng < 1.4.3 >= 1.4.3 |
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|
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Description |
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=========== |
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|
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Multiple vulnerabilities were found in libpng: |
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|
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* The png_decompress_chunk() function in pngrutil.c does not properly |
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handle certain type of compressed data (CVE-2010-0205) |
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|
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* A buffer overflow in pngread.c when using progressive applications |
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(CVE-2010-1205) |
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* A memory leak in pngrutil.c when dealing with a certain type of |
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chunks (CVE-2010-2249) |
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|
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Impact |
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====== |
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|
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An attacker could exploit these vulnerabilities to cause programs |
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linked against the library to crash or execute arbitrary code with the |
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permissions of the user running the vulnerable program, which could be |
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the root user. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All libpng users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.4.3" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2010-0205 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0205 |
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[ 2 ] CVE-2010-1205 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1205 |
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[ 3 ] CVE-2010-2249 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2249 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201010-01.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2010 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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