IBM Information for VU#738331

Domain Name System (DNS) resolver libraries vulnerable to read buffer overflow



Vendor Statement

The AIX operating system is vulnerable to a buffer overflow in the res_nsend() resolver function, as mentioned above, in releases 4.3.3 and 5.1.0. This problem was discovered and fixed earlier while investigating a core dump from the "host" command.

The following APAR's are available for this fix:

AIX 4.3.3: IY31886

AIX 5.1.0: IY31889
The APAR's can be downloaded by going to the following URL, then following the links for your system release level.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



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