Home/CVE/Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2
CVE

CVE-2018-6914

Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2

Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

HIGH · CVSS 7.5 EPSS 0.02372
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

Affected Products & Versions

8
ruby-lang ruby>= 2.2.0 and < 2.2.10
ruby-lang ruby>= 2.3.0 and < 2.3.7
ruby-lang ruby>= 2.4.0 and < 2.4.4
ruby-lang ruby>= 2.5.0 and < 2.5.1
ruby-lang rubyall versions
canonical ubuntu linuxall versions
debian linuxall versions
redhat enterprise linuxall versions
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumRuby on Rails Framework Exceptions
productmediumPotential Ruby Reverse Shell
productmediumRuby Inline Command Execution
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Apr 2018 · 10:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

8
suse-csafSUSE-SU-2020:1570-1
suse-csafopenSUSE-SU-2019:1771-1
suse-csafSUSE-SU-2019:1804-1
rhsaRHSA-2018:3729Important
rhsaRHSA-2018:3731Important
🔗

References & Sources

13
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
http://www.securityfocus.com/bid/103686Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory
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