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Gentoo Linux Security Advisory GLSA 200512-06 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Ethereal: Buffer overflow in OSPF protocol dissector |
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Date: December 14, 2005 |
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Bugs: #115030 |
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ID: 200512-06 |
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Synopsis |
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======== |
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|
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Ethereal is missing bounds checking in the OSPF protocol dissector that |
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could lead to abnormal program termination or the execution of |
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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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Ethereal is a feature-rich network protocol analyzer. It provides |
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protocol analyzers for various network flows, including one for Open |
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Shortest Path First (OSPF) Interior Gateway Protocol. |
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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 net-analyzer/ethereal < 0.10.13-r2 >= 0.10.13-r2 |
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|
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Description |
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=========== |
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|
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iDEFENSE reported a possible overflow due to the lack of bounds |
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checking in the dissect_ospf_v3_address_prefix() function, part of the |
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OSPF protocol dissector. |
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|
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Impact |
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====== |
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|
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An attacker might be able to craft a malicious network flow that would |
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crash Ethereal. It may be possible, though unlikely, to exploit this |
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flaw to execute arbitrary code with the permissions of the user running |
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Ethereal, which could be the root user. |
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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 Ethereal users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.13-r2" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2005-3651 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3651 |
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[ 2 ] iDEFENSE Advisory |
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|
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http://www.idefense.com/application/poi/display?id=349&type=vulnerabilities |
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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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http://security.gentoo.org/glsa/glsa-200512-06.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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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 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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