CVE-2023-4255 Information

Description

An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes resulting in a denial of service condition.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2255207 https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3 https://github.com/tats/w3m/issues/268 https://github.com/tats/w3m/pull/273