IBM AIX Runtime Linker Search Path Vulnerability

BID:1059

Info

IBM AIX Runtime Linker Search Path Vulnerability

Bugtraq ID: 1059
Class: Environment Error
CVE:
Remote: No
Local: Yes
Published: Mar 14 2000 12:00AM
Updated: Mar 14 2000 12:00AM
Credit: This vulnerability was posted to the Bugtraq mailing list on March 14, 2000 by Gregory Neil Shapiro <[email protected]>
Vulnerable: IBM AIX 5.1 L
IBM AIX 4.3.3
IBM AIX 4.3.2
IBM AIX 4.3.1
IBM AIX 4.3
IBM AIX 4.2.1
IBM AIX 4.2
IBM AIX 4.1.5
IBM AIX 4.1.4
IBM AIX 4.1.3
IBM AIX 4.1.2
IBM AIX 4.1.1
IBM AIX 4.1
IBM AIX 5.2
IBM AIX 5.1
Not Vulnerable:

Exploit / POC

IBM AIX Runtime Linker Search Path Vulnerability

An example given by the poster of this problem cites the /usr/bin/imnsecd program as being setgid, and having the current directory ('.') as the first place it looks in its library search path. By creating a libc.so in the current directory, calls made by imnsecd can be intercepted, and alternate commands run. This could lead to the compromise of the group imnsecd runs as.

References

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