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No exploitation reportedFix available

CVE-2018-1000544

No exploitation reported by the sources we read.

  • Published2018-06-26
  • Fixed in1.2.2
  • WeaknessCWE-434 · CWE-59

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..

Timeline

dates in UTC
  1. 2018-06-2616:29CVE publishedNVD

Versions per branch

OSV · NVD
rubyzip
BranchAffectedFixed in
1.2< 1.2.21.2.2
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published
9.0= 9.0no fix published
Redhat cloudforms
BranchAffectedFixed in
4.6= 4.6no fix published

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • ansible-towerRed Hat:cloudforms_managementengine:5.9::el7all versions · fixed in 0:3.2.7-1.el7atand 5 other packages
  • cfmeRed Hat:cloudforms_managementengine:5.9::el7all versions · fixed in 0:5.9.5.3-1.el7cfand 8 other packages
  • ruby-zipUbuntu:18.04:LTSall versions · fixed in 1.2.1-1.1~build0.18.04.1
  • ruby-zipUbuntu:16.04:LTSall versions · no fixed version listed
  • ruby-zipDebian:14all versions · fixed in 1.2.2-1
  • ruby-zipDebian:13all versions · fixed in 1.2.2-1
  • ruby-zipDebian:12all versions · fixed in 1.2.2-1
  • ruby-zipDebian:9all versions · fixed in 1.2.0-1.1+deb9u1

5 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-1000544 Red Hat Product Security20 products fixed · 1 known affected

    rubyzip: arbitrary file write vulnerability / arbitrary code execution using a specially crafted zip file

    tfm-rubygem-rubyzip.src as a component of Red Hat Quickstart Cloud Installer 1

  • RHSA-2018:3466 Red Hat Product Security20 products fixed

    Red Hat Security Advisory: CloudForms 4.6.5 security, bug fix and enhancement update

Full record on NVD

Fix

  1. Update rubyzip to 1.2.2
  2. Vendor fix Red Hat Product Security RHSA-2018:3466 · 20 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. No fix planned, says the vendor Red Hat Product Security CVE-2018-1000544 · 1 productWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-434, CWE-59read 2026-10-23
  • FIRST EPSSEPSS score4.3 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryCRITICAL2020-06-16

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-06-26
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-vqcq-mrmw-mcmg

Frequently asked questions

What is CVE-2018-1000544?

rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..

Is CVE-2018-1000544 actively exploited?

Active exploitation of CVE-2018-1000544 has not been confirmed. Its EPSS score was 4.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-1000544?

CVE-2018-1000544 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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