6.5

CVE-2018-20431: debian debian_linux NULL Pointer Dereference

CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-20431DEBIAN-CVE-2018-20431
Published 24-12-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-20431 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 2.23% chance of exploitation in the next 30 days, higher than 82.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
2.23%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 1
DLA-1616-1DSA-4361-1MGASA-2019-0013USN-4641-1

Timeline

  1. 24-12-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

GNU Libextractor through 1.8 has a NULL Pointer Dereference vulnerability in the function process_metadata() in plugins/ole2_extractor.c.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.23%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

-0.01 pp

From 2.24% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (gnunet.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Gnu1 product
Ubuntu1 product
  • libextractor< 1:1.3-1ubuntu0.1~esm1 | < 1:1.3-4+deb9u3build0.16.04.1 | All versions (No fix recorded)

3 vendors · 4 products

References

10 links