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Gentoo Linux Security Advisory GLSA 200803-20 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: International Components for Unicode: Multiple |
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vulnerabilities |
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Date: March 11, 2008 |
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Bugs: #208001 |
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ID: 200803-20 |
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Synopsis |
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======== |
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|
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Two vulnerabilities have been discovered in the International |
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Components for Unicode, possibly resulting in the remote execution of |
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arbitrary code 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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International Components for Unicode is a set of C/C++ and Java |
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libraries providing Unicode and Globalization support for software |
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applications. |
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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 dev-libs/icu < 3.8.1-r1 >= 3.8.1-r1 |
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|
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Description |
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=========== |
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|
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Will Drewry (Google Security) reported a vulnerability in the regular |
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expression engine when using back references to capture \0 characters |
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(CVE-2007-4770). He also found that the backtracking stack size is not |
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limited, possibly allowing for a heap-based buffer overflow |
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(CVE-2007-4771). |
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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 submit specially crafted regular expressions to |
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an application using the library, possibly resulting in the remote |
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execution of arbitrary code with the privileges of the user running the |
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application or a Denial of Service. |
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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 International Components for Unicode users should upgrade to the |
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latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/icu-3.8.1-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-4770 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4770 |
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[ 2 ] CVE-2007-4771 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4771 |
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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-200803-20.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 2008 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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-- |
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