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Security Advisories: GSA_kwCzR0hTQS1jNnFnLWNqajgtNDdxcM4AAyIq
Possible Denial of Service Vulnerability in Rack's header parsing
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.
Permalink: https://github.com/advisories/GHSA-c6qg-cjj8-47qpJSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1jNnFnLWNqajgtNDdxcM4AAyIq
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: about 1 year ago
Updated: 9 months ago
Identifiers: GHSA-c6qg-cjj8-47qp, CVE-2023-27539
References:
- https://nvd.nist.gov/vuln/detail/CVE-2023-27539
- https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2023-27539.yml
- https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c
- https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff
- https://github.com/advisories/GHSA-c6qg-cjj8-47qp
Blast Radius: 0.0
Affected Packages
rubygems:rack
Dependent packages: 3,603Dependent repositories: 1,043,594
Downloads: 878,693,750 total
Affected Version Ranges: >= 3.0.0, < 3.0.6.1, >= 2.0.0, < 2.2.6.4
Fixed in: 3.0.6.1, 2.2.6.4
All affected versions: 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, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.2.9, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.0.10
All unaffected versions: 0.1.0, 0.2.0, 0.3.0, 0.4.0, 0.9.0, 0.9.1, 1.0.0, 1.0.1, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.2.8, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.3.10, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.8, 1.6.9, 1.6.10, 1.6.11, 1.6.12, 1.6.13