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Gentoo Linux Security Advisory GLSA 200510-15 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Lynx: Buffer overflow in NNTP processing |
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Date: October 17, 2005 |
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Bugs: #108451 |
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ID: 200510-15 |
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Synopsis |
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======== |
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|
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Lynx contains a buffer overflow that may be exploited to execute |
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arbitrary code. |
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|
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Background |
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========== |
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|
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Lynx is a text-mode browser for the World Wide Web. It supports |
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multiple URL types, including HTTP and NNTP URLs. |
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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 www-client/lynx < 2.8.5-r1 >= 2.8.5-r1 |
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|
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Description |
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=========== |
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|
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When accessing a NNTP URL, Lynx connects to a NNTP server and retrieves |
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information about the available articles in the target newsgroup. Ulf |
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Harnhammar discovered a buffer overflow in a function that handles the |
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escaping of special characters. |
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|
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Impact |
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====== |
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|
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An attacker could setup a malicious NNTP server and entice a user to |
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access it using Lynx (either by creating NNTP links on a web page or by |
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forcing a redirect for Lynx users). The data returned by the NNTP |
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server would trigger the buffer overflow and execute arbitrary code |
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with the rights of the user running Lynx. |
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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 Lynx users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=www-client/lynx-2.8.5-r1" |
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|
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References |
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========== |
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[ 1 ] CAN-2005-3120 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3120 |
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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-200510-15.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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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 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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http://creativecommons.org/licenses/by-sa/2.0 |
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