IBM AIX at command buffer overflow
| aix-at-bo (35976) |  High Risk |
Description:
IBM AIX is vulnerable to a buffer overflow, caused by improper bounds checking by the "at" command. By sending a specially-crafted command-line argument, a local attacker could overflow a buffer and execute arbitrary code on the system with root privileges.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
For AIX 5.3.0:
Apply APAR IZ00139, available from the IBM Quick Links Web site. See References.
--OR--
Apply the interim fix for this vulnerability (at_ifix.tar.Z), available from the IBM AIX FTP site. See References.
References:
- IBM AIX FTP site: Index of ftp://aix.software.ibm.com/aix/efixes/security/.
- IBM Quick Links Web site: Quick links for AIX fixes.
- IBM SECURITY ADVISORY Tue Aug 7 17:42:20 CDT 2007: AIX at Command Buffer Overflow Vulnerability.
- BID-25273: IBM AT Command Local Buffer Overflow Vulnerability
- CVE-2007-4355: Buffer overflow in the at program on IBM AIX 5.3 allows local users to gain privileges via unspecified vectors.
- SA26437: IBM AIX "at" Command Privilege Escalation Vulnerability
- SECTRACK ID: 1018570: AIX Buffer Overflow in at Command Lets Local Users Gain Elevated Privileges
- VUPEN/ADV-2007-2905: IBM AIX at Command Arguments Handling Privilege Escalation Vulnerability
Platforms Affected:
- IBM AIX 5.3
Reported:
Aug 10, 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.