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security advisoryprivilege escalationmoderate severity

openSUSE 10.x: SUSE-SA:2008:040 Moderate: Postfix Escalation Issue

Postfix is a well known MTA. Postfix is a well known MTA. During a source code audit the SuSE Security-Team discovered a local During a source code audit the SuSE Security-Team discovered a local privilege escalation bug (CVE-2008-2936) as well as a mailbox ownership problem (CVE-2008-2937) in postfix. The first bug allowed local users to execute arbitrary commands as root while the second one al [More...]. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: postfix Announcement ID: SUSE-SA:2008:040 Date: Thu, 14 Aug 2008 14:00:00 +0000 Affected Products: openSUSE 10.2 openSUSE 10.3 openSUSE 11.0 SuSE Linux Enterprise Server 8 SUSE SLES 9 Novell Linux Desktop 9 Open Enterprise Server Novell Linux POS 9 SUSE Linux Enterprise Desktop 10 SP1 SUSE Linux Enterprise Server 10 SP1 SUSE Linux Enterprise Desktop 10 SP2 SUSE Linux Enterprise Server 10 SP2 Vulnerability Type: local privilege escalation Severity (1-10): 6 SUSE Default Package: yes Cross-References: CVE-2008-2936 CVE-2008-2937 Content of This Advisory: 1) Security Vulnerability Resolved: local privilege escalation and mbox ownership problem Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: none 6) AuthenticityVerification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion Postfix is a well known MTA. During a source code audit the SuSE Security-Team discovered a local privilege escalation bug (CVE-2008-2936) as well as a mailbox ownership problem (CVE-2008-2937) in postfix. The first bug allowed local users to execute arbitrary commands as root while the second one allowed local users to read other users mail. 2) Solution or Work-Around Please install the update package. 3) Special Instructions and Notes After successfully installing the postfix update, execute the command /etc/init.d/postfix restart as root to restart the postfix system. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv to apply the update, replacing with the filename of the downloaded RPM package. x86 Platform: openSUSE 11.0: openSUSE 10.3: openSUSE 10.2: Sources: openSUSE 11.0: openSUSE 10.3: openSUSE 10.2: Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: Open Enterprise Server Novell Linux POS 9 Novell Linux Desktop 9 SuSE Linux Enterprise Server 8 SUSE Linux Enterprise Server 10 SP1 SUSE Linux Enterprise Server 10 SP2 SUSE Linux Enterprise Desktop 10 SP1 SUSE Linux Enterprise Desktop10 SP2 SUSE SLES 9 ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: none ______________________________________________________________________________ 6) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify replacing with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team " where is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with. The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig to verify the signature of the package, replacing with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from This email address is being protected from spambots. You need JavaScript enabled to view it. with the key ID 9C800ACA. This key isautomatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement. - SUSE runs two security mailing lists to which any interested party may subscribe: This email address is being protected from spambots. You need JavaScript enabled to view it. - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to . This email address is being protected from spambots. You need JavaScript enabled to view it. - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to . ==================================================================== SUSE's security contact is or . The public key is listed below. ==================================================================== . Uncover the recent postfix security patch correcting privilege elevation and mailbox management vulnerabilities within openSUSE systems.. Postfix Security, Privilege Escalation, openSUSE Advisory. . Severity: Important. LinuxSecurity.com Team

Aug 14, 2008 •Important SuSE