HP HP-UX 10.20/11.00/11.04/11.11/11.22 dtsession _XKB_CHARSET memory corruption

Summaryinfo

A vulnerability was found in HP HP-UX 10.20/11.00/11.04/11.11/11.22. It has been rated as critical. The affected element is an unknown function of the file dxpause/dxconsole/dtsession. This manipulation of the argument _XKB_CHARSET as part of Environment Variable causes memory corruption. The identification of this vulnerability is CVE-2002-1605. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability classified as critical was found in HP HP-UX 10.20/11.00/11.04/11.11/11.22 (Operating System). Affected by this vulnerability is an unknown function of the file dxpause/dxconsole/dtsession. The manipulation of the argument _XKB_CHARSET as part of a Environment Variable leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in HP Tru64 UNIX 5.1a, 5.1, 5.0a, 4.0g, and 4.0f allows attackers to execute arbitrary code via a long _XKB_CHARSET environment variable to (1) dxpause, (2) dxconsole, or (3) dtsession.

The weakness was shared 09/02/2002 as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is known as CVE-2002-1605 since 03/25/2005. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (10016), Exploit-DB (21774) and SecurityFocus (BID 5599†). The entries VDB-18732, VDB-18736, VDB-18737 and VDB-18738 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• HP

Name

• HP-UX

Version

• 10.20
• 11.00
• 11.04
• 11.11
• 11.22

License

• commercial

Website

• Vendor: https://www.hp.com/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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