Dovecot base_dir privilege escalation
| dovecot-basedir-privilege-escalation (54363) |  High Risk |
Description:
Dovecot could allow a local attacker to gain elevated privileges on the system, caused by insecure permissions being set on the base_dir directory. An attacker could exploit this vulnerability to log in to an account with the privileges of another Dovecot user.
*CVSS:
| Base Score: | 4.6 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 3.4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Upgrade to the latest version of Dovecot (1.2.8 or later), available from the Dovecot Download Web site. See References.
References:
- Dovecot Download Web site: Download.
- Dovecot-news: v1.2.8 released.
- BID-37084: Dovecot Insecure 'base_dir' Permissions Local Privilege Escalation Vulnerability
- CVE-2009-3897: Dovecot 1.2.x before 1.2.8 sets 0777 permissions during creation of certain directories at installation time, which allows local users to access arbitrary user accounts by replacing the auth socket, related to the parent directories of the base_dir directory, and possibly the base_dir directory itself.
- MDVSA-2009:306: dovecot
- SA37443: Dovecot Insecure Directory Permissions Security Issue
- SUSE-SR:2010:001: SUSE Security Summary Report
- VUPEN/ADV-2009-3306: Dovecot base_dir Insecure Permissions Security Bypass Vulnerability
Platforms Affected:
- Dovecot Dovecot 1.2
- Mandriva Linux 2010
- Mandriva Linux 2010 X86_64
Reported:
Nov 20, 2009
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.