Rails Active Support has a possible ReDoS vulnerability in number_to_delimited
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.5%
exploitation probability
0.5%top 60% of all CVEs
observed exploitation
nono source reports it
Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
rails · activesupportReferences
https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49https://github.com/rails/rails/releases/tag/v7.2.3.1https://github.com/rails/rails/releases/tag/v8.0.4.1https://github.com/rails/rails/releases/tag/v8.1.2.1https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38