IBM AIX "libi18n" library LANG environment variable buffer overflow
| aix-libi18n-lang-bo (6863) |  High Risk |
Description:
IBM AIX is vulnerable to a buffer overflow in the 'libi18n' library file. By setting the LANG environment variable to a specially formatted string, a local attacker can overflow a buffer when the 'libi18n' library is called. An attacker can use this vulnerability to launch a denial of service attack or gain root privileges on the affected system.
Platforms Affected:
- IBM, AIX 4.3
- IBM, AIX 4.3.1
- IBM, AIX 4.3.2
- IBM, AIX 4.3.3
- IBM, AIX 5.1
Remedy:
For IBM AIX 4.3.x:
Apply IY20867 patch, as listed in IBM Managed Security Services Outside Advisory Redistribution MSS-OAR-E01-2001:271.1. See References.
For IBM AIX 5.1.0:
Apply IY21309 patch, as listed in IBM Managed Security Services Outside Advisory Redistribution MSS-OAR-E01-2001:271.1. See References.
Consequences:
Gain Privileges
References:
- CIAC Information Bulletin L-123, AIX libi18n Library Vulnerability at http://www.ciac.org/ciac/bulletins/l-123.shtml.
- BID-3070: IBM AIX LANG Environment Variable Buffer Overflow Vulnerability
- CVE-2001-0533: Buffer overflow in libi18n library in IBM AIX 5.1 and 4.3.x allows local users to gain root privileges via a long LANG environmental variable.
- OSVDB ID: 5585: AIX libi18n Library Long LANG Variable Overflow
Reported:
Jul 18, 2001
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