W3m: out of bounds read in strnew_size() at w3m/str.c

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Summary

CVECVE-2023-38252
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-14 18:15:10 UTC
Updated2026-11-07 12:17:27 UTC
DescriptionAn out-of-bounds read flaw was found in w3m, in the Strnew_size function in Str.c. This issue may allow an attacker to cause a denial of service through a crafted HTML file.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.003580000 probability, percentile 0.297680000 (date 2026-11-08)

Problem Types: CWE-125 | CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1[email protected]Secondary4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNACVSS4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fedoraproject Extra Packages For Enterprise Linux 8.0 All All All
Operating System Fedoraproject Fedora 38 All All All
Operating System Redhat Enterprise Linux 6.0 All All All
Application Tats W3m 0.5.3\+git20230121 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified

References

ReferenceSourceLinkTags
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[BUG] Out of bound read in Strnew_size , Str.c:61 · Issue #270 · tats/w3m · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Issue Tracking, Third Party Advisory
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
2222775 – (CVE-2023-38252) CVE-2023-38252 w3m: Out of bounds read in Strnew_size() at w3m/Str.c af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-06-29T00:00:00.000ZReported to Red Hat.
CNA2023-06-29T00:00:00.000ZMade public.

Legacy QID Mappings

  • 285394 Fedora Security Update for w3m (FEDORA-2024-38c2261ca0)
  • 285395 Fedora Security Update for w3m (FEDORA-2024-3fc66f8bf3)
  • 503275 Alpine Linux Security Update for w3m
  • 506267 Alpine Linux Security Update for w3m
  • 755263 SUSE Enterprise Linux Security Update for w3m (SUSE-SU-2023:4439-1)

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