Perl Mail::Audit module temporary file symlink
| perl-mail-audit-symlink (24380) |  Medium Risk |
Description:
Mail::Audit (libmail-audit-perl) could allow a local attacker to launch a symlink attack. If logging is enabled, the audit.pm script creates temporary files insecurely. A local attacker could exploit this vulnerability by creating a symbolic link from a temporary file to other files on the system, which would allow the attacker to create or overwrite arbitrary files on the system with the privileges of the user running the affected Perl script that is linked to the Mail::Audit module.
*CVSS:
| Base Score: | 2.9 |
| Access Vector: | Local |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 2.5 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
File Manipulation
Remedy:
For Debian GNU/Linux:
Refer to DSA-960-3 for patch or upgrade information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
References:
- CPAN Web site: Simon Cozens / Mail-Audit - search.cpan.org.
- BID-16434: Mail-Audit Insecure Temporary File Creation Vulnerability
- CVE-2005-4536: Mail::Audit module in libmail-audit-perl 2.1-5, when logging is enabled without a default log file specified, uses predictable log filenames, which allows local users to overwrite arbitrary files via a symlink attack on the [PID]-audit.log temporary file.
- DSA-960: libmail-audit-perl -- insecure temporary file creation
- SA18652: Mail::Audit Insecure Log File Creation Vulnerability
- VUPEN/ADV-2006-0378: Mail-Audit Module for Perl Insecure Temporary File Creation Vulnerability
Platforms Affected:
- Debian Debian Linux 3.0
- Debian Debian Linux 3.1
- Simon Cozens Mail::Audit 2.1
Reported:
Jan 31, 2006
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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.