Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tats | W3M | 0.5.3\+git20230121-1 |
| Fedoraproject | Extra Packages For Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 39 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2255207Issue TrackingThird Party Advisory
- https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3Patch
- https://github.com/tats/w3m/issues/268ExploitIssue TrackingPatch
- https://github.com/tats/w3m/pull/273Issue TrackingPatch
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://bugzilla.redhat.com/show_bug.cgi?id=2255207Issue TrackingThird Party Advisory
- https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3Patch
- https://github.com/tats/w3m/issues/268ExploitIssue TrackingPatch
- https://github.com/tats/w3m/pull/273Issue TrackingPatch
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2023-4255?
CVE-2023-4255 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 cra...
How severe is CVE-2023-4255?
CVE-2023-4255 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-4255?
Check the references section above for vendor advisories and patch information. Affected products include: Tats W3M, Fedoraproject Extra Packages For Enterprise Linux, Fedoraproject Fedora.