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Gentoo Linux Security Advisory GLSA 200706-01 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: libexif: Integer overflow vulnerability |
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Date: June 05, 2007 |
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Bugs: #178081 |
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ID: 200706-01 |
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|
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Synopsis |
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======== |
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|
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libexif fails to handle Exif (EXchangeable Image File) data inputs, |
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making it vulnerable to an integer overflow. |
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|
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Background |
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========== |
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|
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libexif is a library for parsing, editing and saving Exif data. |
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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/libexif < 0.6.15 >= 0.6.15 |
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|
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Description |
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=========== |
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|
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Victor Stinner reported an integer overflow in the |
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exif_data_load_data_entry() function from file exif-data.c while |
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handling Exif data. |
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|
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Impact |
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====== |
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|
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An attacker could entice a user to process a file with specially |
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crafted Exif extensions with an application making use of libexif, |
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which will trigger the integer overflow and potentially execute |
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arbitrary code or crash the application. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All libexif users should upgrade to the latest version. Please note |
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that users upgrading from "<=media-libs/libexif-0.6.13" should also run |
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revdep-rebuild after their upgrade. |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.15" |
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# revdep-rebuild --library=/usr/lib/libexif.so |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-2645 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2645 |
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|
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Availability |
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============ |
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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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|
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http://security.gentoo.org/glsa/glsa-200706-01.xml |
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|
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Concerns? |
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========= |
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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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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2007 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 |