Vulnerability Details CVE-2023-4255
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.5%
CVSS Severity
CVSS v3 Score 5.5
References
- 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
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AULOBQJLXE2KCT5UVQMKGEFL4GFIAOED/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKFZQUK7FPWWJQYICDZZ4YWIPUPQ2D3R/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TODROGVCWZ435HQIZE6ARQC5LPQLIA5C/
- 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
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AULOBQJLXE2KCT5UVQMKGEFL4GFIAOED/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKFZQUK7FPWWJQYICDZZ4YWIPUPQ2D3R/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TODROGVCWZ435HQIZE6ARQC5LPQLIA5C/
Products affected by CVE-2023-4255
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cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0
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cpe:2.3:a:tats:w3m:0.5.3+git20230121-1
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cpe:2.3:a:tats:w3m:0.5.3+git20230121-2
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cpe:2.3:a:tats:w3m:0.5.3+git20230129
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cpe:2.3:o:fedoraproject:fedora:39