FreeBSD ee ispell_op temporary file symlink
| ee-ispell-op-symlink (24074) |  Medium Risk |
Description:
The ee text editing utility in FreeBSD could allow a local attacker to launch a symlink attack, caused by insecure temporary file creation by the ispell_op() function. 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 ee editor.
*CVSS:
| Base Score: | 2.6 |
| Access Vector: | Local |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 2.3 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
File Manipulation
Remedy:
Refer to FreeBSD Security Advisory FreeBSD-SA-06:02.ee for patch or upgrade information. See References.
References:
- FreeBSD Security Advisory FreeBSD-SA-06:02.ee : ee temporary file privilege escalation.
- BID-16207: FreeBSD EE Insecure Temporary File Creation Vulnerability
- CVE-2006-0055: The ispell_op function in ee on FreeBSD 4.10 to 6.0 uses predictable filenames and does not confirm which file is being written, which allows local users to overwrite arbitrary files via a symlink attack when ee invokes ispell.
- OSVDB ID: 22320: FreeBSD ee ispell_op Function Symlink Arbitrary File Overwrite
- SA18404: FreeBSD ee Insecure Temporary File Creation Vulnerability
- SECTRACK ID: 1015469: FreeBSD ee Unsafe Temporary Files May Let Local Users Gain Elevated Privileges
Platforms Affected:
- FreeBSD FreeBSD
Reported:
Jan 11, 2006
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.