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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200804-27">
<title>SILC: Multiple vulnerabilities</title>
<synopsis>
Multiple vulnerabilities were found in SILC Client, Server, and Toolkit,
allowing for Denial of Service and execution of arbitrary code.
</synopsis>
<product type="ebuild">silc-toolkit silc-client silc-server</product>
<announced>April 24, 2008</announced>
<revised>April 24, 2008: 01</revised>
<bug>212362</bug>
<bug>214116</bug>
<bug>214812</bug>
<access>remote</access>
<affected>
<package name="net-im/silc-toolkit" auto="yes" arch="*">
<unaffected range="ge">1.1.7</unaffected>
<vulnerable range="lt">1.1.7</vulnerable>
</package>
<package name="net-im/silc-client" auto="yes" arch="*">
<unaffected range="ge">1.1.4</unaffected>
<vulnerable range="lt">1.1.4</vulnerable>
</package>
<package name="net-im/silc-server" auto="yes" arch="*">
<unaffected range="ge">1.1.2</unaffected>
<vulnerable range="lt">1.1.2</vulnerable>
</package>
</affected>
<background>
<p>
SILC (Secure Internet Live Conferencing protocol) Toolkit is a software
development kit for use in clients, SILC Server is a communication
server, and SILC Client is an IRSSI-based text client.
</p>
</background>
<description>
<ul>
<li>Nathan G. Grennan reported a boundary error in SILC Toolkit
within the silc_fingerprint() function in the file
lib/silcutil/silcutil.c when passing overly long data, resulting in a
stack-based buffer overflow (CVE-2008-1227).</li>
<li>A vulnerability
has been reported in SILC Server which is caused due to an error in the
handling of "NEW_CLIENT" packets that do not contain a nickname
(CVE-2008-1429).</li>
<li>Ariel Waissbein, Pedro Varangot, Martin
Mizrahi, Oren Isacson, Carlos Garcia, and Ivan Arce of Core Security
Technologies reported that SILC Client, Server, and Toolkit contain a
vulnerability in the silc_pkcs1_decode() function in the silccrypt
library (silcpkcs1.c), resulting in an integer underflow, signedness
error, and a buffer overflow (CVE-2008-1552).</li>
</ul>
</description>
<impact type="normal">
<p>
A remote attacker could exploit these vulnerabilities to cause a Denial
of Service or execute arbitrary code with the privileges of the user
running the application.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All SILC Toolkit users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-toolkit-1.1.7"</code>
<p>
All SILC Client users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-client-1.1.4"</code>
<p>
All SILC Server users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-server-1.1.2"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1227">CVE-2008-1227</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1429">CVE-2008-1429</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1552">CVE-2008-1552</uri>
</references>
<metadata tag="requester" timestamp="Fri, 21 Mar 2008 02:19:53 +0000">
rbu
</metadata>
<metadata tag="bugReady" timestamp="Thu, 03 Apr 2008 14:49:27 +0000">
rbu
</metadata>
<metadata tag="submitter" timestamp="Wed, 23 Apr 2008 16:41:55 +0000">
keytoaster
</metadata>
</glsa>
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