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CVE-2018-6484

23
FAUCET Score

CVE-2018-6484 describes a denial-of-service vulnerability in ZZIPlib 0.13.67, affecting Canonical and gdraheim distributions of ZZIPlib. A memory alignment and bus error in the __zzip_fetch_disk_trailer function can be triggered by remote attackers using a specially crafted zip file. Rated Medium severity (CVSS 6.5), it requires user interaction (UI:R) but has low attack complexity (AC:L), leading to high availability impact (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 91st 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-2018-6484Low

zziplib: Loading of misaligned memory address in zip.c:__zzip_fetch_disk_trailer can lead to a denial of service via crafted zip file

Feb 2, 2018

References

github.com / gdraheim/zziplib/issues/14
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2020/06/msg00029.html
usn.ubuntu.com / 3699-1
Third Party Advisory