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Gentoo Linux Security Advisory GLSA 201408-06 |
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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: August 14, 2014 |
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Bugs: #503014, #507378 |
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ID: 201408-06 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been discovered in libpng which can allow |
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a remote attacker to cause a Denial of Service condition. |
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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 < 1.6.10 >= 1.6.10 |
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< 1.3 |
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*>= 1.5.18 |
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|
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Description |
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=========== |
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|
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The png_push_read_chunk function in pngpread.c in the progressive |
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decoder enters an infinite loop, when it encounters a zero-length IDAT |
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chunk. In addition certain integer overflows have been detected and |
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corrected. |
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The 1.2 branch is not affected by these vulnerabilities. |
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|
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Impact |
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====== |
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|
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A remote attacker could entice a user to open a specially crafted PNG |
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file using an application linked against libpng, possibly resulting in |
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Denial of Service. |
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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-1.6.10" |
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Users with current installs in the 1.5 branch should also upgrade this |
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using: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.5.18:1.5" |
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|
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Packages which depend on this library may need to be recompiled. Tools |
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such as revdep-rebuild may assist in identifying these packages. |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2013-7353 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7353 |
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[ 2 ] CVE-2013-7354 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7354 |
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[ 3 ] CVE-2014-0333 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0333 |
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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-201408-06.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 2014 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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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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http://creativecommons.org/licenses/by-sa/2.5 |
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