Lynx: Arbitrary command execution

Lynx: Arbitrary command execution An incomplete fix for an issue related to the Lynx URL handler might allow for the remote execution of arbitrary commands. lynx 2009-09-12 2009-09-12 243058 remote 2.8.6-r4 2.8.6-r4

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

Clint Ruoho reported that the fix for CVE-2005-2929 (GLSA 200511-09) only disabled the lynxcgi:// handler when not using the advanced mode.

A remote attacker can entice a user to access a malicious HTTP server, causing Lynx to execute arbitrary commands. NOTE: The advanced mode is not enabled by default. Successful exploitation requires the "lynxcgi://" protocol to be registered with lynx on the victim's system.

There is no known workaround at this time.

All Lynx users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/lynx-2.8.6-r4"

CVE-2005-2929 CVE-2008-4690 GLSA 200511-09 rbu a3li a3li