IBM AIX crontab buffer overflow
| aix-crontab-bo (38164) |  High Risk |
Description:
IBM AIX is vulnerable to a buffer overflow, caused by improper bounds checking by the crontab 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: | 7.2 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.5 |
| Exploitability: | Unproven |
| Remediation Level: | Temporary-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
For AIX 5.2.0:
Apply APAR IZ04832, available from the IBM Quick Links Web site. See References.
--OR--
Apply the interim fix for this vulnerability (crontab_ifix.tar), 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:Thu Oct 18 10:03:58 CDT 2007: AIX crontab buffer overflow vulnerability.
- iDefense PUBLIC ADVISORY: 10.30.07: IBM AIX 5.2 crontab BSS Buffer Overflow Vulnerability.
- BID-26263: IBM AIX crontab Local Privilege Escalation Vulnerability
- CVE-2007-4621: Buffer overflow in crontab in IBM AIX 5.2 allows local users to gain privileges via long command line arguments.
- 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.