GHSA-c6qg-cjj8-47qp

Suggest an improvement
Source
https://github.com/advisories/GHSA-c6qg-cjj8-47qp
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-c6qg-cjj8-47qp/GHSA-c6qg-cjj8-47qp.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-c6qg-cjj8-47qp
Aliases
Published
2023-03-15T21:36:02Z
Modified
2025-01-09T15:48:50.528550Z
Summary
Possible Denial of Service Vulnerability in Rack's header parsing
Details

There is a denial of service vulnerability in the header parsing component of Rack. This vulnerability has been assigned the CVE identifier CVE-2023-27539.

Versions Affected: >= 2.0.0 Not affected: None. Fixed Versions: 2.2.6.4, 3.0.6.1

Impact

Carefully crafted input can cause header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse headers using Rack (virtually all Rails applications) are impacted.

Workarounds

Setting Regexp.timeout in Ruby 3.2 is a possible workaround.

Database specific 
{
    "nvd_published_at": "2025-01-09T01:15:07Z",
    "cwe_ids": [],
    "severity": "LOW",
    "github_reviewed_at": "2023-03-15T21:36:02Z",
    "github_reviewed": true
}
References

Affected packages

RubyGems / rack

Package

Name
rack
Purl
pkg:gem/rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.0.0
Fixed
2.2.6.4

Affected versions

2.*

2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.0.9.1
2.0.9.2
2.0.9.3
2.0.9.4
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.4.1
2.1.4.2
2.1.4.3
2.1.4.4
2.2.0
2.2.1
2.2.2
2.2.3
2.2.3.1
2.2.4
2.2.5
2.2.6
2.2.6.1
2.2.6.2
2.2.6.3

RubyGems / rack

Package

Name
rack
Purl
pkg:gem/rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0.0
Fixed
3.0.6.1

Affected versions

3.*

3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.4.1
3.0.4.2
3.0.5
3.0.6