CVE-2018-18384

Exp

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.

Published: 2018-10-16 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-18384 is rated High Exploit Risk (67.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.22%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-18384

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-18384

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 2.89% 3.22% +0.33%
2 2026-04-30 2.75% 2.89% +0.14%
3 2026-04-13 — 2.75% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-18384

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-18384

OS Trackers for CVE-2018-18384

vendor priority summary link
alpine medium CVE-2018-18384: 1 source package rows (unzip); 44 state rows across 10 repos (3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 26, open 18. https://security.alpinelinux.org/vuln/CVE-2018-18384
debian not yet assigned CVE-2018-18384 not yet assigned priority: Debian including 1 source packages (unzip), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-18384
redhat low — https://access.redhat.com/security/cve/CVE-2018-18384
suse low CVE-2018-18384 severity low: SUSE including 247 source package names (0.23.1-12.3:unzip-6.00-4.8.13, amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, …), 491 product×package rows across 254 product lines (Container bci/spack, Image SLES12-SP5-Azure-BYOS, … (254 product lines)): Fixed 260, Known Affected 231. https://www.suse.com/security/cve/CVE-2018-18384/
ubuntu low CVE-2018-18384 low priority: Ubuntu including 1 source packages (unzip), 9 status rows across 9 suites (bionic, cosmic, disco, eoan, focal, groovy, trusty, upstream, xenial): not-affected 7, released 2. https://ubuntu.com/security/CVE-2018-18384

Affected software / configurations for CVE-2018-18384

Vendor Product Version Raw CPE
unzip_project unzip 6.0 cpe:2.3:a:unzip_project:unzip:6.0:*:*:*:*:*:*:*

References for CVE-2018-18384

cvelogic Threat Intelligence