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CVE-2018-18384

21
FAUCET Score

CVE-2018-18384 describes a buffer overflow vulnerability in Info-ZIP UnZip 6.0, specifically within the list.c component. This flaw arises when processing specially crafted ZIP archives where the compressed and uncompressed size values are manipulated, leading to an insufficient buffer size. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction. A successful exploit could lead to high availability impact, potentially causing a denial of service. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:a:unzip_project:unzip:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.56%
Probability of exploitation in next 30 days
EPSS Percentile
83.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0256 is in the 93rd percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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

Patch Available

Vendor Patches (36)

microsoftpatch availablevia msrc
Product: unzip-6.0-20.azl3.aarch64.rpm on Azure Linux 3.0 ARMFixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 16846-16817Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 18861-17084Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 16844-16820Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: azl3 unzip 6.0-20 on Azure Linux 3.0Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: azl3 unzip 6.0-22 on Azure Linux 3.0Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: cm1 unzip 6.0-15 on CBL Mariner 1.0Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: cbl2 unzip 6.0-19 on CBL Mariner 2.0Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: unzip-debuginfo-6.0-19.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 6.0-19
microsoftpatch availablevia msrc
Product: unzip-6.0-20.azl3.x86_64.rpm on Azure Linux 3.0 x64Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 16846-17084Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 16845-16823Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: 12837-12137Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: 12838-12137Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: 12839-12138Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: 12840-12138Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: 12841-12139Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: 12842-12139Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: 12843-12140Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: 12844-12140Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: 12845-12356Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: 12846-12357Fixed in: 6.0-20
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 6.0-19
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 6.0-15
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: unzip-6.0-15.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: unzip-debuginfo-6.0-15.cm1.x86_64.rpm on CBL Mariner 1.0 x64Fixed in: 6.0-15
microsoftpatch availablevia msrc
Product: unzip-6.0-15.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 6.0-15
microsoftpatch availablevia msrc
Product: unzip-debuginfo-6.0-15.cm1.aarch64.rpm on CBL Mariner 1.0 ARMFixed in: 6.0-15
microsoftpatch availablevia msrc
Product: unzip-6.0-19.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: unzip-debuginfo-6.0-19.cm2.x86_64.rpm on CBL Mariner 2.0 x64Fixed in: 6.0-19
microsoftpatch availablevia msrc
Product: unzip-6.0-19.cm2.aarch64.rpm on CBL Mariner 2.0 ARMFixed in: 6.0-19
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: unzip-0:6.0-20.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: unzip
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: unzip

Vendor Advisories (4)

microsoft2024-Jun/CVE-2018-18384

CVE-2018-18384

Jun 11, 2024
microsoft2020-Aug/CVE-2018-18384

CVE-2018-18384

Aug 11, 2020
microsoft2018-Oct/CVE-2018-18384Moderate

Info-ZIP UnZip 6.0 has a buffer overflow in list.c when a ZIP archive has a crafted relationship between the compressed-size value and the uncompressed-size value because a buffer size is 10 and is supposed to be 12.

Oct 9, 2018
redhatCVE-2018-18384Low

unzip: Buffer overflow in list.c resulting in a denial of service

Sep 28, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-04/msg00009.html
access.redhat.com / errata/RHSA-2019:2159
bugzilla.suse.com / show_bug.cgi
ExploitIssue TrackingPatchThird Party Advisory
sourceforge.net / p/infozip/bugs/53
PatchThird Party Advisory