CVE-2018-6381

Name: CVE-2018-6381
Creator: NVD / NIST
Published: 2018-01-29T17:29:00.443+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.73%

Last modified Jun 17, 2026

CVE-2018-6381 is a vulnerability of currently unknown severity. In ZZIPlib 0.13.67, 0.13.66, 0.13.65, 0.13.64, 0.13.63, 0.13.62, 0.13.61, 0.13.60, 0.13.59, 0.13.58, 0.13.57 and 0.13.56 there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data.. EPSS estimates a 1.73% chance of exploitation in the next 30 days.

Description

In ZZIPlib 0.13.67, 0.13.66, 0.13.65, 0.13.64, 0.13.63, 0.13.62, 0.13.61, 0.13.60, 0.13.59, 0.13.58, 0.13.57 and 0.13.56 there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data.

Metrics

EPSS Probability

1.73%

74.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Gdraheim	Zziplib	0.13.67
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04

References

https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-6381
https://github.com/gdraheim/zziplib/issues/12Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
https://usn.ubuntu.com/3699-1/Third Party Advisory
https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-6381
https://github.com/gdraheim/zziplib/issues/12Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
https://usn.ubuntu.com/3699-1/Third Party Advisory

Timeline

Published: Jan 29, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6381?

How severe is CVE-2018-6381?

Severity scoring for CVE-2018-6381 is pending analysis. The EPSS model estimates a 1.73% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6381?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6381?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST