CVE-2023-27539

rubygem-rack: denial of service in header parsing

Published Jan 9, 2025 CVSS 3.1 · 5.3 Medium EPSS 1.1% KEV · Not listed
Description
There is a denial of service vulnerability in the header parsing component of Rack.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-3392-1 ruby-rack security update
Debian DSA Debian DSA DSA-5530-1 ruby-rack security update
Github GHSA Github GHSA GHSA-c6qg-cjj8-47qp Possible Denial of Service Vulnerability in Rack's header parsing
Ubuntu USN Ubuntu USN USN-6689-1 Rack vulnerabilities
Ubuntu USN Ubuntu USN USN-6905-1 Rack vulnerabilities
Ubuntu USN Ubuntu USN USN-7036-1 Rack vulnerabilities
History
Type Values Removed Values Added
First Time appeared Debian
Debian debian Linux
Rack
Rack rack
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Vendors & Products Debian
Debian debian Linux
Rack
Rack rack
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
Description A denial of service vulnerability was found in rubygem-rack in how it parses headers. A carefully crafted input can cause header parsing to take an unexpected amount of time, possibly resulting in a denial of service. There is a denial of service vulnerability in the header parsing component of Rack.
References

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Jan 9, 2025, 9:24 PM
Reserved
Mar 2, 2023, 5:14 PM
Status
Analyzed
Published
Jan 9, 2025, 1:15 AM
Modified
Jun 17, 2026, 5:45 AM
Severity
Moderate
Public date
Mar 15, 2023, 12:00 AM