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Gentoo Linux Security Advisory GLSA 200711-27 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: Link Grammar: User-assisted execution of arbitrary code |
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Date: November 18, 2007 |
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Bugs: #196803 |
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ID: 200711-27 |
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|
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Synopsis |
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======== |
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|
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A buffer overflow vulnerability has been discovered in Link Grammar. |
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|
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Background |
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========== |
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|
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The Link Grammar parser is a syntactic parser of English, based on link |
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grammar, an original theory of English syntax. |
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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/link-grammar < 4.2.4-r1 >= 4.2.4-r1 |
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|
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Description |
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=========== |
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|
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Alin Rad Pop from Secunia Research discovered a boundary error in the |
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function separate_sentence() in file tokenize.c when processing an |
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overly long word which might lead to a stack-based buffer overflow. |
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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 parse a specially crafted |
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sentence, resulting in the remote execution of arbitrary code with the |
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privileges of the user running the application. Note that this |
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vulnerability may be triggered by an application using Link Grammar to |
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parse sentences (e.g. AbiWord). |
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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 Link Grammar users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/link-grammar-4.2.4-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-5395 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5395 |
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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-200711-27.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 |
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