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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200711-29">
+ <title>Samba: Execution of arbitrary code</title>
+ <synopsis>
+ Samba contains two buffer overflow vulnerabilities potentially resulting in
+ the execution of arbitrary code.
+ </synopsis>
+ <product type="ebuild">samba</product>
+ <announced>2007-11-20</announced>
+ <revised count="03">2007-12-05</revised>
+ <bug>197519</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-fs/samba" auto="yes" arch="*">
+ <unaffected range="ge">3.0.27a</unaffected>
+ <vulnerable range="lt">3.0.27a</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ Samba is a suite of SMB and CIFS client/server programs for UNIX.
+ </p>
+ </background>
+ <description>
+ <p>
+ Two vulnerabilities have been reported in nmbd. Alin Rad Pop (Secunia
+ Research) discovered a boundary checking error in the
+ reply_netbios_packet() function which could lead to a stack-based
+ buffer overflow (CVE-2007-5398). The Samba developers discovered a
+ boundary error when processing GETDC logon requests also leading to a
+ buffer overflow (CVE-2007-4572).
+ </p>
+ </description>
+ <impact type="high">
+ <p>
+ To exploit the first vulnerability, a remote unauthenticated attacker
+ could send specially crafted WINS "Name Registration" requests followed
+ by a WINS "Name Query" request. This might lead to execution of
+ arbitrary code with elevated privileges. Note that this vulnerability
+ is exploitable only when WINS server support is enabled in Samba. The
+ second vulnerability could be exploited by sending specially crafted
+ "GETDC" mailslot requests, but requires Samba to be configured as a
+ Primary or Backup Domain Controller. It is not believed the be
+ exploitable to execute arbitrary code.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ To work around the first vulnerability, disable WINS support in Samba
+ by setting "<i>wins support = no</i>" in the "global" section of your
+ smb.conf and restart Samba.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All Samba users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose "&gt;=net-fs/samba-3.0.27a"</code>
+ <p>
+ The first vulnerability (CVE-2007-5398) was already fixed in Samba
+ 3.0.26a-r2.
+ </p>
+ </resolution>
+ <references>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4572">CVE-2007-4572</uri>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5398">CVE-2007-5398</uri>
+ </references>
+ <metadata tag="submitter" timestamp="2007-11-03T23:37:14Z">
+ rbu
+ </metadata>
+ <metadata tag="bugReady" timestamp="2007-11-20T21:13:02Z">
+ p-y
+ </metadata>
+</glsa>