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.
*CVSS:
| Base Score: | 6.9 |
| Access Vector: | Local |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.1 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
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.
References:
- IBM AIX FTP site: IBM AIX.
- IBM APAR IZ05017: POTENTIAL SECURITY ISSUE.
- iDefense PUBLIC ADVISORY: 10.30.07: IBM AIX dig dns_name_fromtext Integer Underflow Vulnerability.
- 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
Platforms Affected:
- IBM AIX 5.2
Reported:
Oct 30, 2007
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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.