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PEAR::MDB2: Information disclosure


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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.


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.


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


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


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


Page updated December 09, 2007

Summary: This is a Gentoo Linux Security Advisory

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