CVS: additional DoS and arbitrary code execution vulnerabilities

CVS: additional DoS and arbitrary code execution vulnerabilities Several serious new vulnerabilities have been found in CVS, which may allow an attacker to remotely compromise a CVS server. CVS 2004-06-10 2004-06-10 53408 remote 1.11.17 1.11.16-r1

CVS (Concurrent Versions System) is an open-source network-transparent version control system. It contains both a client utility and a server.

A team audit of the CVS source code performed by Stefan Esser and Sebastian Krahmer resulted in the discovery of several remotely exploitable vulnerabilities including:

no-null-termination of "Entry" lines
error_prog_name "double-free()"
Argument integer overflow
serve_notify() out of bounds writes

An attacker could use these vulnerabilities to cause a Denial of Service or execute arbitrary code with the permissions of the user running cvs.

There is no known workaround at this time. All users are advised to upgrade to the latest available version of CVS.

All CVS users should upgrade to the latest stable version:


    # emerge sync

    # emerge -pv ">=dev-util/cvs-1.11.17"
    # emerge ">=dev-util/cvs-1.11.17"

E-matters Advisory 09/2004 CAN-2004-0414 CAN-2004-0416 CAN-2004-0417 CAN-2004-0418 jaervosz