[Full-disclosure] iDefense Security Advisory 08.01.08: Ingres Database for Linux ingvalidpw Untrusted Library Path Vulnerability



iDefense Security Advisory 08.01.08
http://labs.idefense.com/intelligence/vulnerabilities/
Aug 01, 2008

I. BACKGROUND

Ingres Database is a database server used in several Computer
Associates' products. For example, CA Directory Service use thes Ingres
Database server. More information can be found on the vendor's website
at the following URL.

http://ingres.com/downloads/prod-cert-download.php

II. DESCRIPTION

Local exploitation of an untrusted library path vulnerability in the
"ingvalidpw" utility, as included in Ingres Database 2006 Release 2 for
Linux, allows attackers to execute arbitrary code with root privileges.

The vulnerability exists within the "ingvalidpw" utility included with
Ingres database. This utility is used to verify a user's credentials,
and is installed set-uid root. When loading shared libraries, the
"ingvalidpw" program will load libraries from a directory owned by the
"ingres" user. By using a specially crafted library, a user with
"ingres" privileges can gain root.

III. ANALYSIS

Exploitation of this vulnerability allows an attacker to elevate their
privileges from the "ingres" user to root. By itself, this is not that
serious of a vulnerability. However, when combined with the libbecompat
and verifydb vulnerabilities it allows an unprivileged local user to
gain root privileges.

IV. DETECTION

iDefense has confirmed the existence of this vulnerability in Ingres
2006 Enterprise Edition Release 2 for Linux x86 (32-bit). Other
versions may also be affected.

V. WORKAROUND

iDefense is currently unaware of any workarounds for this issue.

VI. VENDOR RESPONSE

"This problem has been identified and resolved by Ingres in the
following releases: Ingres 2006 release 2 (9.1.0), Ingres 2006 release
1 (9.0.4), and Ingres 2.6."

For more information, refer to Ingres' advisory at the following URL.

http://www.ingres.com/support/security-alert-080108.php

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-3357 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

07/20/2007 Initial vendor response
07/23/2007 Initial vendor notification
08/01/2008 Coordinated public disclosure

IX. CREDIT

The discoverer of this vulnerability wishes to remain anonymous.

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X. LEGAL NOTICES

Copyright © 2008 iDefense, Inc.

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Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.

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