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CVE

CVE-2020-8161

A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerabi

A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerability in the Rack::Directory app that is bundled with Rack which could result in information disclosure.

HIGH · CVSS 8.6 EPSS 0.00907
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-548Exposure of Information Through Directory Listing
▤

Affected Products & Versions

3
rack project rack< 2.2.0
debian linuxall versions
canonical ubuntu linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems rack HIGH fixed in 2.1.3
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · support@hackerone.com
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 NVD02 Jul 2020 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
⚑

Vendor Advisories

5
suse-csafSUSE-SU-2022:3347-1
usnUSN-4561-2
usnUSN-4561-1
suse-csafSUSE-SU-2020:2678-1
rhsaRHSA-2020:4366Important
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPAMailing ListPatchThird Party Advisory
https://hackerone.com/reports/434404Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00006.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00038.htmlMailing ListThird Party Advisory
https://usn.ubuntu.com/4561-1/Third Party Advisory
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