Lynx: Arbitrary command execution

Lynx: Arbitrary command execution Lynx is vulnerable to an issue which allows the remote execution of arbitrary commands. lynx 2005-11-13 2005-11-13 112213 remote 2.8.5-r2 2.8.5-r2

Lynx is a fully-featured WWW client for users running cursor-addressable, character-cell display devices such as vt100 terminals and terminal emulators.

iDefense labs discovered a problem within the feature to execute local cgi-bin programs via the "lynxcgi:" URI handler. Due to a configuration error, the default settings allow websites to specify commands to run as the user running Lynx.

A remote attacker can entice a user to access a malicious HTTP server, causing Lynx to execute arbitrary commands.

Disable "lynxcgi" links by specifying the following directive in lynx.cfg:


    TRUSTED_LYNXCGI:none

All Lynx users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/lynx-2.8.5-r2"

CVE-2005-2929 iDefense Security Advisory 11.11.05 taviso adir koon