IBM AIX LVM commands symlink attack
| aix-lvm-commands-symlink (16011) |  Medium Risk |
Description:
IBM AIX is vulnerable to a symlink attack. Logical Volume Manager (LVM) commands insecurely handle temporary files. A local attacker could create a symbolic link from a temporary file to an arbitrary file on the system, which could allow the attacker to overwrite files or cause a denial of service.
Platforms Affected:
- HP, HP-UX 11.00
- HP, HP-UX 11.11
- HP, HP-UX 11.22
- HP, HP-UX 11.23
- IBM, AIX 5.1
- IBM, AIX 5.2
Remedy:
For IBM AIX 5.1:
Apply the APAR IY55681 patch, when it becomes available from the IBM Web site. See References.
For IBM AIX 5.2:
Apply the APAR IY55682 patch, when it becomes available from the IBM Web site. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
File Manipulation
References:
- CIAC Information Bulletin O-131, AIX Symlink and Buffer Overflow Vulnerabilities in LVM Commands at http://www.ciac.org/ciac/bulletins/o-131.shtml.
- IBM Web site, IBM APAR IY55682 - Possible Buffer Overflow in PUTLVCB Command at http://www-1.ibm.com/support/docview.wss?uid=isg1IY55682.
- IBM Web site, IBM APAR IY55681 - Possible Buffer Overflow in PUTLVCB Command at http://www-1.ibm.com/support/docview.wss?uid=isg1IY55681.
- BID-10230: Multiple IBM AIX Unspecified LVM Utilities Symbolic Link Vulnerabilities
- CVE-2004-0545: LVM for AIX 5.1 and 5.2 allows local users to overwrite arbitrary files via a symlink attack.
Reported:
Apr 28, 2004
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