CVE-2003-0089

Vulnerability

A buffer overflow vulnerability exists in the Software Distributor (SD) utilities swinstall and swmodify for HP-UX versions B.11.00 and B.11.11. Local users can trigger this overflow by providing a long string for the LANG environment variable when executing these setuid programs [1].

Exploitation

An attacker with local access to an affected HP-UX system can exploit this vulnerability. The attacker needs to set the LANG environment variable to a specially crafted string containing shellcode and a large number of NOP instructions, followed by return addresses. This crafted variable is then passed to either the swinstall or swverify utility, which are executed with elevated privileges [1].

Impact

Successful exploitation of this vulnerability allows a local attacker to execute arbitrary code with the privileges of the affected setuid programs. This typically means the attacker can gain root privileges on the system, allowing for complete compromise [1].

Mitigation

HP has addressed this vulnerability. The fixed versions are not explicitly mentioned in the available references, but users are advised to update their HP-UX systems. No specific workarounds are detailed, and the vulnerability is not listed as being part of the CISA KEV catalog. Users should consult HP's official advisories for the exact patch details and affected version information [1].