PEAR::MDB2: Information disclosure

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200712-05 / PEAR-MDB2
Release Date	December 09, 2007
Latest Revision	December 09, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-php/PEAR-MDB2	< 2.5.0_alpha1	>= 2.5.0_alpha1	All supported architectures

Related bugreports: #198446

Synopsis

A vulnerability when handling database input in PEAR::MDB2 allows remote attackers to obtain sensitive information.

2. Impact Information

Background

PEAR::MDB2 is a database abstraction layer for PHP aimed to provide a common API for all supported relational database management systems. A LOB ("large object") is a database field holding binary data.

Description

priyadi discovered that the request to store a URL string as a LOB is treated as a request to retrieve and store the contents of the URL.

Impact

If an application using PEAR::MDB2 allows input of LOB values via a web form, remote attackers could use the application as an indirect proxy or obtain sensitive information, including "file://" URLs local to the web server.

3. Resolution Information

Workaround

As a workaround, manually filter input before storing it as a LOB in PEAR::MDB2.

Resolution

All PEAR::MDB2 users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/PEAR-MDB2-2.5.0_alpha1"

4. References

CVE-2007-5934

Page updated December 09, 2007

Summary: This is a Gentoo Linux Security Advisory

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