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Gentoo Linux Security Advisory GLSA 200804-27 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: SILC: Multiple vulnerabilities |
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Date: April 24, 2008 |
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Bugs: #212362, #214116, #214812 |
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ID: 200804-27 |
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|
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Synopsis |
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======== |
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|
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Multiple vulnerabilities were found in SILC Client, Server, and |
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Toolkit, allowing for Denial of Service and execution of arbitrary |
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code. |
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|
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Background |
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========== |
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|
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SILC (Secure Internet Live Conferencing protocol) Toolkit is a software |
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development kit for use in clients, SILC Server is a communication |
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server, and SILC Client is an IRSSI-based text client. |
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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-im/silc-toolkit < 1.1.7 >= 1.1.7 |
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2 net-im/silc-client < 1.1.4 >= 1.1.4 |
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3 net-im/silc-server < 1.1.2 >= 1.1.2 |
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------------------------------------------------------------------- |
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3 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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* Nathan G. Grennan reported a boundary error in SILC Toolkit within |
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the silc_fingerprint() function in the file lib/silcutil/silcutil.c |
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when passing overly long data, resulting in a stack-based buffer |
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overflow (CVE-2008-1227). |
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|
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* A vulnerability has been reported in SILC Server which is caused |
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due to an error in the handling of "NEW_CLIENT" packets that do not |
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contain a nickname (CVE-2008-1429). |
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|
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* Ariel Waissbein, Pedro Varangot, Martin Mizrahi, Oren Isacson, |
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Carlos Garcia, and Ivan Arce of Core Security Technologies reported |
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that SILC Client, Server, and Toolkit contain a vulnerability in the |
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silc_pkcs1_decode() function in the silccrypt library (silcpkcs1.c), |
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resulting in an integer underflow, signedness error, and a buffer |
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overflow (CVE-2008-1552). |
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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 exploit these vulnerabilities to cause a Denial |
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of Service or execute arbitrary code with the privileges of the user |
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running the application. |
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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 SILC Toolkit 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 ">=net-im/silc-toolkit-1.1.7" |
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|
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All SILC Client 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 ">=net-im/silc-client-1.1.4" |
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|
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All SILC Server 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 ">=net-im/silc-server-1.1.2" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2008-1227 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1227 |
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[ 2 ] CVE-2008-1429 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1429 |
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[ 3 ] CVE-2008-1552 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1552 |
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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-200804-27.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 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 |