RHSA-2010:0039: Moderate: gcc and gcc4 security update

First published: Wed Jan 13 2010(Updated: )

The gcc and gcc4 packages include, among others, C, C++, and Java GNU<br>compilers and related support libraries. libgcj contains a copy of GNU<br>Libtool's libltdl library.<br>A flaw was found in the way GNU Libtool's libltdl library looked for<br>libraries to load. It was possible for libltdl to load a malicious library<br>from the current working directory. In certain configurations, if a local<br>attacker is able to trick a local user into running a Java application<br>(which uses a function to load native libraries, such as<br>System.loadLibrary) from within an attacker-controlled directory containing<br>a malicious library or module, the attacker could possibly execute<br>arbitrary code with the privileges of the user running the Java<br>application. (CVE-2009-3736)<br>All gcc and gcc4 users should upgrade to these updated packages, which<br>contain a backported patch to correct this issue. All running Java<br>applications using libgcj must be restarted for this update to take effect.

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