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diff --git a/metadata/glsa/glsa-200404-21.xml b/metadata/glsa/glsa-200404-21.xml new file mode 100644 index 000000000000..b2d4fcc2d6a1 --- /dev/null +++ b/metadata/glsa/glsa-200404-21.xml @@ -0,0 +1,96 @@ +<?xml version="1.0" encoding="utf-8"?> +<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> +<glsa id="200404-21"> + <title>Multiple Vulnerabilities in Samba</title> + <synopsis> + There is a bug in smbfs which may allow local users to gain root via a + setuid file on a mounted Samba share. Also, there is a tmpfile symlink + vulnerability in the smbprint script distributed with Samba. + </synopsis> + <product type="ebuild">samba</product> + <announced>2004-04-29</announced> + <revised count="01">2004-04-29</revised> + <bug>41800</bug> + <bug>45965</bug> + <access>local </access> + <affected> + <package name="net-fs/samba" auto="yes" arch="*"> + <unaffected range="ge">3.0.2a-r2</unaffected> + <vulnerable range="le">3.0.2a</vulnerable> + </package> + </affected> + <background> + <p> + Samba is a package which allows UNIX systems to act as file servers for + Windows computers. It also allows UNIX systems to mount shares exported by + a Samba/CIFS/Windows server. smbmount is a program in the Samba package + which allows normal users on a UNIX system to mount remote shares. smbprint + is an example script included in the Samba package which can be used to + facilitate network printing. + </p> + </background> + <description> + <p> + Two vulnerabilities have been discovered in Samba. The first vulnerability + allows a local user who has access to the smbmount command to gain root. An + attacker could place a setuid-root binary on a Samba share/server he or she + controls, and then use the smbmount command to mount the share on the + target UNIX box. The remote Samba server must support UNIX extensions for + this to work. This has been fixed in version 3.0.2a. + </p> + <p> + The second vulnerability is in the smbprint script. By creating a symlink + from /tmp/smbprint.log, an attacker could cause the smbprint script to + write to an arbitrary file on the system. This has been fixed in version + 3.0.2a-r2. + </p> + </description> + <impact type="normal"> + <p> + Local users with access to the smbmount command may gain root access. Also, + arbitrary files may be overwritten using the smbprint script. + </p> + </impact> + <workaround> + <p> + To workaround the setuid bug, remove the setuid bits from the + /usr/bin/smbmnt, /usr/bin/smbumount and /usr/bin/mount.cifs binaries. + However, please note that this workaround will prevent ordinary users from + mounting remote SMB and CIFS shares. + </p> + <p> + To work around the smbprint vulnerability, set "debug=no" in the smbprint + configuration. + </p> + </workaround> + <resolution> + <p> + All users should update to the latest version of the Samba package. + </p> + <p> + The following commands will perform the upgrade: + </p> + <code> + # emerge sync + + # emerge -pv ">=net-fs/samba-3.0.2a-r2" + # emerge ">=net-fs/samba-3.0.2a-r2"</code> + <p> + Those who are using Samba's password database also need to run the + following command: + </p> + <code> + # pdbedit --force-initialized-passwords</code> + <p> + Those using LDAP for Samba passwords also need to check the sambaPwdLastSet + attribute on each account, and ensure it is not 0. + </p> + </resolution> + <references> + <uri link="http://www.securityfocus.com/archive/1/353222/2004-04-09/2004-04-15/1">BugTraq Thread: Samba 3.x + kernel 2.6.x local root vulnerability</uri> + <uri link="http://seclists.org/lists/bugtraq/2004/Mar/0189.html">BugTraq: smbprint Vulnerability</uri> + </references> + <metadata tag="submitter"> + condordes + </metadata> +</glsa> |