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>> IBM AIX Multiple Privilege Escalation and Security Bypass Vulnerabilities
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Multiple vulnerabilities have been identified in IBM AIX, which could be exploited by malicious users to bypass security restrictions, disclose sensitive information or obtain elevated privileges.
The first issue is caused by buffer overflow errors in the swap, swapoff, swapon, lchangevg, ldeletepv, putlvodm, lvaryoffvg, lvgenminor, tellclvmd, utape, and uspchrp commands, which could be exploited by a local attacker (member of the "system" group) to execute arbitrary code with root privileges.
The second vulnerability is caused by a buffer overflow error in the "pioout" command, which could be exploited by malicious users to execute arbitrary code with root privileges.
The third issue is caused due to insecure permissions being set on various files installed by the Web-based System Manager (WebSM) Remote Client for Linux, which could be exploited by a non-privileged local user to write arbitrary data to the affected files.
The fourth vulnerability is caused by an unspecified error in the "ps" command when displaying current status of processes, which could be exploited by a non-privileged user to access sensitive data for arbitrary processes.
Affected Products
IBM AIX 5.2
IBM AIX 5.3
IBM AIX 5.3.7
IBM AIX 6.1
Solution
Apply interim fixes (ifixes) :
ftp://aix.software.ibm.com/aix/efixes/security/swap_fix.tar
ftp://aix.software.ibm.com/aix/efixes/security/websm_linux_fix.tar
ftp://aix.software.ibm.com/aix/efixes/security/lvm_ifix.tar
ftp://aix.software.ibm.com/aix/efixes/security/pioout_ifix.tar
ftp://aix.software.ibm.com/aix/efixes/security/ps_ifix.tar
ftp://aix.software.ibm.com/aix/efixes/security/uspchrp_fix.tar
ftp://aix.software.ibm.com/aix/efixes/security/utape_fix.tar
IBM AIX 5.2 - Apply APARs IY96095, IZ00559, IZ10828, IZ06260, IZ06261, IZ11242, and IZ10840.
IBM AIX 5.3 - Apply APARs IY96101, IY97257, IY98331, IY98340, IY99537, IZ06620, IZ06621, IZ12745, and IZ10841.
IBM AIX 5.3.7 - Apply APARs IZ06488, IZ06489, IZ11243, and IZ10842.
IBM AIX 6.1.0 - Apply APARs IZ11244 and IZ10844.
References
http://www.vupen.com/english/advisories/2008/0261
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4064
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4066
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4068
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4070
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4072
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4075
http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=4078
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=648
Credits
Vulnerabilities reported by the vendor, Andrea (bunker) Purificato, and iDefense Labs.
ChangeLog
2008-01-24 : Initial release
2008-01-25 : Updated References
Vulnerability Management
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