NSFOCUS SA2006-02 : IBM AIX mklvcopy Local Privilege Escalation Vulnerability
- From: NSFOCUS Security Team <security@xxxxxxxxxxx>
- Date: Mon, 24 Apr 2006 16:35:17 +0800
NSFOCUS Security Advisory (SA2006-02)
IBM AIX mklvcopy Local Privilege Escalation Vulnerability
Release Date: 2006-04-24
CVE ID: CVE-2006-1246
Affected systems & software
IBM AIX 5.3
Unaffected systems & software
NSFocus Security Team discovered a local privilege escalation vulnerability
in IBM AIX mklvcopy which allows users of local system group to gain root
The mklvcopy shipped with IBM AIX 5.3 is used to increase the number of copies
in each logical partition in LogicalVolume. By default mklvcopy is set with
suid root bit, and can be run by system group users.
mklvcopy contains a vulnerability when calling external commands, which allows
a local attacker to execute arbitrary command as root. Successful exploitation
requires the attacker should gain system group privilege first.
Remove suid root bit from mklvocpy.
# chmod a-s /usr/sbin/mklvcopy
The vendor has released Patch APAR IY82739 to fix the vulnerability. The related
AIX 5 APAR Patch can be downloaded at:
The temporary patch for the vulnerability can be downloaded at:
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-1246 to this issue. This is a candidate for inclusion in the
CVE list (http://cve.mitre.org), which standardizes names for security problems.
Candidates may change significantly before they become official CVE entries.
Yang Jilong of NSFocus Security Team found the vulnerability.
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NSFOCUS Security Team <security@xxxxxxxxxxx>
NSFOCUS INFORMATION TECHNOLOGY CO.,LTD
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