PT-2018-9440 · Ruby · Rubyzip

Tuzovakaoff · Published 2018-06-26 · Updated 2026-03-13 · CVE-2018-1000544

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions rubyzip versions 1.2.1 and earlier

Description The rubyzip gem contains a Directory Traversal issue in the Zip::File component, allowing an attacker to write arbitrary files to the filesystem. This can be exploited if a site allows uploading of .zip files, and an attacker uploads a malicious file containing symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem.

Recommendations For rubyzip versions 1.2.1 and earlier, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Link Following

Unrestricted File Upload

Weakness Enumeration

CWE-59

CWE-434

Related Identifiers

CVE-2018-1000544

DLA-1467-1

DLA-2307-1

GHSA-VQCQ-MRMW-MCMG

OPENSUSE-SU-2024:11352-1

OPENSUSE-SU-2024:13168-1

OPENSUSE-SU-2024:14176-1

OPENSUSE-SU-2025:15126-1

OPENSUSE-SU-2026:10363-1

RHSA-2018:3466

Affected Products

Rubyzip

References · 22

• 🔥 https://github.com/rubyzip/rubyzip/issues/369 · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubyzip/CVE-2018-1000544.yml · Exploit
• https://osv.dev/vulnerability/GHSA-vqcq-mrmw-mcmg · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-1000544 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-1000544 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:13168-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2018:3466 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1467-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-1000544 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10363-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000544 · Security Note
• https://cve.org/CVERecord?id=CVE-2018-1000544 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-1000544 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15126-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2307-1 · Vendor Advisory