Emacs email helper symlink
| emacs-emailhelper-symlink (57457) |  Medium Risk |
Description:
Emacs could allow a local attacker to launch a symlink attack. The email helper creates temporary files insecurely. A local attacker could exploit this vulnerability by creating a symbolic link from a temporary file to various files on the system, which could allow the attacker to overwrite arbitrary files on the system with elevated privileges.
*CVSS:
| Base Score: | 3.3 |
| Access Vector: | Local |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 2.9 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
File Manipulation
Remedy:
Apply the appropriate patch for your system. See References.
References:
- Red Hat Bugzilla ¿ Bug 578267: CVE-2010-0825 emacs, xemacs: Race condition by moving message from user's inbox into user's Rmail file [NEEDINFO].
- BID-39039: GNU Emacs Email Helper Insecure File Creation Vulnerability
- CVE-2010-0825: lib-src/movemail.c in movemail in emacs 22 and 23 allows local users to read, modify, or delete arbitrary mailbox files via a symlink attack, related to improper file-permission checks.
- MDVSA-2010:083: emacs
- OSVDB ID: 63430: emacs lib-src/movemail.c Symlink Local Privilege Escalation
- USN-919-1: Emacs vulnerability
- VUPEN/ADV-2010-0734: Ubuntu Security Update Fixes Emacs File Permission Vulnerability
- VUPEN/ADV-2010-0952: Mandriva Security Update Fixes Emacs File Permission Vulnerability
Platforms Affected:
- Canonical Ubuntu 8.04 LTS
- Canonical Ubuntu 8.10
- GNU emacs 23.1
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- Mandriva Enterprise Server 5
- Mandriva Enterprise Server 5 X86_64
- Mandriva Linux 2009.0
- Mandriva Linux 2009.0 X86_64
- Mandriva Linux 2009.1
- Mandriva Linux 2009.1 X86_64
- Mandriva Linux 2010
- Mandriva Linux 2010 X86_64
Reported:
Mar 30, 2010
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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.