IBM AIX console commands symlink attack
| aix-console-commands-symlink (16008) |  Medium Risk |
Description:
IBM AIX is vulnerable to a symlink attack. AIX console commands included in the bos.rte.console and bos.rte.serv_aid filesets create insecure files. A local attacker could create a symbolic link for one of these files to an arbitrary file on the system, which could allow the attacker to overwrite files or cause a denial of service.
Platforms Affected:
- IBM, AIX 5.1
- IBM, AIX 5.2
Remedy:
For IBM AIX 5.1:
Apply the APAR IY55790 patch, as listed in the IBM Security Advisory: Thu Apr 22 15:17:51 CDT 2004. See References.
For IBM AIX 5.2:
Apply the APAR IY55789 patch, as listed in the IBM Security Advisory: Thu Apr 22 15:17:51 CDT 2004. See References.
—OR—
Apply the appropriate Efixe for your system, as listed in the IBM Security Advisory: Thu Apr 22 15:17:51 CDT 2004. See References.
Consequences:
File Manipulation
References:
- IBM Security Advisory: Thu Apr 22 15:17:51 CDT 2004, symlink vulnerabilities in console commands. at https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs?mode=18&ID=279.
- BID-10231: Multiple IBM AIX Unspecified Console Commands Symbolic Link Vulnerabilities
- CVE-2004-2634: The (1) bos.rte.serv_aid or (2) bos.rte.console filesets in IBM AIX 5.1 and 5.2 allow local users to overwrite arbitrary files via a symlink attack on temporary files via unknown attack vectors.
- OSVDB ID: 5711: AIX bos.rte.console Symlink Arbitrary File Overwrite
- OSVDB ID: 5712: AIX bos.rte.serv_aid Commands Insecure File Creation
- SA11496: AIX Console Commands Insecure File Creation Vulnerabilities
- SECTRACK ID: 1009975: IBM AIX Console Command Temporary Files May Let Local Users Gain Elevated Privileges
Reported:
Apr 22, 2004
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