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Gentoo Linux Security Advisory GLSA 200909-13 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: irssi: Execution of arbitrary code |
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Date: September 12, 2009 |
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Bugs: #271875 |
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ID: 200909-13 |
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Synopsis |
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======== |
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|
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A remotely exploitable off-by-one error leading to a heap overflow was |
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found in irssi which might result in the execution of arbitrary code. |
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Background |
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========== |
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|
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irssi is a modular textUI IRC client with IPv6 support. |
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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-irc/irssi < 0.8.13-r1 >= 0.8.13-r1 |
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|
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Description |
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=========== |
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|
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Nemo discovered an off-by-one error leading to a heap overflow in |
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irssi's event_wallops() parsing function. |
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Impact |
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====== |
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|
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A remote attacker might entice a user to connect to a malicious IRC |
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server, use a man-in-the-middle attack to redirect a user to such a |
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server or use ircop rights to send a specially crafted WALLOPS message, |
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which might result in the execution of arbitrary code with the |
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privileges of the user running irssi. |
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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 irssi users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose =net-irc/irssi-0.8.13-r1 |
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|
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References |
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========== |
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[ 1 ] CVE-2009-1959 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1959 |
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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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|
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http://security.gentoo.org/glsa/glsa-200909-13.xml |
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|
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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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https://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2009 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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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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