IBM AIX dig utility dns_name_fromtext integer underflow
| aix-dig-dnsnamefromtext-integer-underflow (38169) |  High Risk |
Description:
The IBM AIX dig utility is vulnerable to an integer underflow in the dns_name_fromtext function in libdns.a. By sending a specially-crafted TSIG key parameter using the -y command line option, a local attacker could exploit this vulnerability to corrupt memory and possibly execute arbitrary code on the system with root privileges.
Platforms Affected:
- IBM, AIX 5.2
Remedy:
Apply APAR IZ05017, available from the IBM Quick Links Web site. See References.
--OR--
Apply the interim fix for this vulnerability (dig_ifix.tar), available from the IBM AIX FTP site. See References.
Consequences:
Gain Privileges
References:
- IBM AIX FTP site, IBM AIX at ftp://aix.software.ibm.com/aix/efixes/security/.
- IBM APAR IZ05017, POTENTIAL SECURITY ISSUE at http://www-1.ibm.com/support/docview.wss?uid=isg1IZ05017.
- iDefense PUBLIC ADVISORY: 10.30.07, IBM AIX dig dns_name_fromtext Integer Underflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=613.
- BID-26262: IBM AIX dig Local Privilege Escalation Vulnerability
- CVE-2007-4622: Integer underflow in the dns_name_fromtext function in (1) libdns_nonsecure.a and (2) libdns_secure.a in IBM AIX 5.2 allows local users to gain privileges via a crafted -y (TSIG key) command line argument to dig.
- SA27437: IBM AIX Multiple Privilege Escalation Vulnerabilities
- SECTRACK ID: 1018871: IBM AIX Various Application Buffer Overflows Let Local Users Gain Root Privileges
- VUPEN/ADV-2007-3669: IBM AIX Utilities Arguments Handling Privilege Escalation Vulnerabilities
Reported:
Oct 30, 2007
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