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CVE-2018-6381

23
FAUCET Score

CVE-2018-6381 describes a segmentation fault vulnerability in ZZIPlib versions 0.13.56 through 0.13.67, affecting products like Canonical and GDraheim Ubuntu Linux distributions. This flaw, categorized as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), stems from invalid memory access within the zzip_disk_fread function due to insufficient validation of the 'size' variable. With a CVSS v3 score of 6.5 (Medium), this vulnerability can be exploited remotely with low attack complexity, requiring user interaction, and primarily leads to high availability impact (denial of service). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.13.67CPE matchmatch criteria
cpe:2.3:a:gdraheim:zziplib:0.13.67:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 87th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: zziplib

Vendor Advisories (1)

redhatCVE-2018-6381Low

zziplib: Invalid memory access in the zzip_disk_fread function in zzip/mmapped.c

Jan 29, 2018

References

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