A vulnerability classified as critical has been found in HP HP-UX 10/10.20/9 (Operating System). Affected is an unknown code block of the component chfn. The manipulation as part of a Long Argument leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

buffer overflow in chfn command in hp-ux 9.x through 10.20 allows local users to gain privileges via a long command line argument.

The bug was discovered 12/09/1996. The weakness was presented 12/13/1996 as the HP Bug of the Week! as not defined posting (Bugtraq). The advisory is shared for download at marc.theaimsgroup.com. This vulnerability is traded as CVE-1999-1089. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (2008) and Vulnerability Center (SBV-20904). Further details are available at ciac.llnl.gov. See 13790 for similar entry.

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• Operating System

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• HP

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• HP-UX

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• commercial

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