5.5

CVE-2023-4255: fedoraproject extra_packages_for_enterprise_linux Out-of-bounds Write

CVSS: 5.5v3.1MediumModified
AliasesSUSE-SU-2024:0014-1UBUNTU-CVE-2023-4255USN-6580-1
Published 21-12-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-4255 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in fedoraproject extra_packages_for_enterprise_linux. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1
MGASA-2024-0105

Timeline

  1. 21-12-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

24%

Versus all other CVEs

30-day change

0.00 pp

From 0.32% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    W3M

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Fedoraproject2 products
Suse2 products
  • w3m&distro=SUSE Linux Enterprise Server 12 SP5< 0.5.3.git20161120-161.9.1
  • w3m&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 0.5.3.git20161120-161.9.1
Debian1 product
  • w3mAll versions (No fix recorded) | < 0.5.3+git20230121-2.1
Tats1 product
  • w3m0.5.3\+git20230121-1 | 0.5.3\+git20230121-2 | 0.5.3\+git20230129
Ubuntu1 product
  • w3mAll versions (No fix recorded) | < 0.5.3+git20230121-2ubuntu1 | < 0.5.3-15ubuntu0.2+esm2 | < 0.5.3-36ubuntu0.1+esm1 | < 0.5.3-37ubuntu0.2 | < 0.5.3+git20210102-6ubuntu0.2

5 vendors · 7 products

References

14 links
Show all 14 references