w3m: CVE-2023-4255

Debian Bug report logs - #1059265
w3m: CVE-2023-4255

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Moritz Mühlenhoff <jmm@inutil.org>

To: submit@bugs.debian.org

Subject: w3m: CVE-2023-4255

Date: Fri, 22 Dec 2023 10:38:47 +0100

Source: w3m
X-Debbugs-CC: team@security.debian.org
Severity: grave
Tags: security

Hi,

The following vulnerability was published for w3m.

CVE-2023-4255[0]:
| 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.

https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3
https://github.com/tats/w3m/issues/268
https://github.com/tats/w3m/pull/273

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-4255
    https://www.cve.org/CVERecord?id=CVE-2023-4255

Please adjust the affected versions in the BTS as needed.

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