Postfix email information disclosure

postfix-email-information-disclosure (44461)

Low Risk

Description:

Postfix could allow a local attacker with create permissions to the mail spool directory to obtain sensitive information. The destination ownership is not properly verified during email delivery. By creating an insecure mailbox file, an attacker could exploit this vulnerability to read other user's mail.

*CVSS:

Base Score:	1.9
Access Vector:	Local
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	1.4
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of Postfix (2.5.4 Patchlevel 4 or later), available from the Postfix Web site. See References.

References:

• Postfix Web site: 20080725.
• Postfix Web site: Die Postfix Homepage.
• SUSE Security Announcement SUSE-SA:2008:040: postfix Thu, 14 Aug 2008 14:00:00 +0000.
• BID-30691: Postfix Local Information Disclosure and Local Privilege Escalation Vulnerabilities
• CVE-2008-2937: Postfix 2.5 before 2.5.4 and 2.6 before 2.6-20080814 delivers to a mailbox file even when this file is not owned by the recipient, which allows local users to read e-mail messages by creating a mailbox file corresponding to another user's account name.
• GLSA-200808-12: Postfix: Local privilege escalation vulnerability
• MDVSA-2009:224: postfix
• MDVSA-2009:224-1: postfix
• OSVDB ID: 47659: Postfix Cross-user Filename Local Mail Interception
• RHSA-2011-0422: Moderate: postfix security update
• SA31485: Postfix Symlink Handling and Destination Ownership Security Issues
• SUSE-SA:2008:040: postfix security problem
• VUPEN/ADV-2008-2385: Postfix Symlink Handling and Mailbox Ownership Vulnerabilities

Platforms Affected:

• Gentoo Linux
• MandrakeSoft Mandrake Linux 2008.0
• MandrakeSoft Mandrake Linux 2008.0 X86_64
• MandrakeSoft Mandrake Linux 2008.1
• MandrakeSoft Mandrake Linux 2008.1 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 3.0
• MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
• MandrakeSoft Mandrake Linux Corporate Server 4.0
• Novell Linux Desktop 9
• Novell Linux POS 9
• Novell Open Enterprise Server
• Novell OpenSUSE 10.2
• Novell OpenSUSE 10.3
• Novell OpenSUSE 11.0
• Novell SUSE Linux Enterprise Desktop 10 SP1
• Novell SUSE Linux Enterprise Desktop 10 SP2
• Novell SUSE Linux Enterprise Server 10 SP1
• Novell SUSE Linux Enterprise Server 10 SP2
• RedHat Enterprise Linux 4 WS
• RedHat Enterprise Linux 4 Desktop
• RedHat Enterprise Linux 4 AS
• RedHat Enterprise Linux 4 ES
• RedHat Enterprise Linux 4.8.z ES
• RedHat Enterprise Linux 4.8.z AS
• RedHat Enterprise Linux 5
• RedHat Enterprise Linux 5 Client
• RedHat Enterprise Linux EUS 5.6.z
• RedHat Enterprise Linux Long Life 5.6
• SuSE SuSE SLES 9
• Wietse Venema Postfix 2.5.0
• Wietse Venema Postfix 2.5.1
• Wietse Venema Postfix 2.5.2
• Wietse Venema Postfix 2.5.3
• Wietse Venema Postfix 2.6.0
• Wietse Venema Postfix

Reported:

Aug 14, 2008

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