Within the URI template implementation in Addressable, a maliciously crafted template may result in uncontrolled resource consumption, leading to denial of service when matched against a URI. In typical usage, templates would not normally be read from untrusted user input, but nonetheless, no previous security advisory for Addressable has cautioned against doing this. Users of the parsing capabilities in Addressable but not the URI template capabilities are unaffected.
The vulnerability was introduced in version 2.3.0 (previously yanked) and has been present in all subsequent versions up to, and including, 2.7.0. It is fixed in version 2.8.0.
The vulnerability can be avoided by only creating Template objects from trusted sources that have been validated not to produce catastrophic backtracking.
If you have any questions or comments about this advisory:
CPE | Name | Operator | Version |
---|---|---|---|
addressable | eq | 2.3.3 | |
addressable | eq | 2.3.6 | |
addressable | eq | 2.7.0 | |
addressable | eq | 2.3.7 | |
addressable | eq | 2.4.0 | |
addressable | eq | 2.3.4 | |
addressable | eq | 2.3.2 | |
addressable | eq | 2.3.8 | |
addressable | eq | 2.5.0 | |
addressable | eq | 2.6.0 |
github.com/advisories/GHSA-jxhc-q857-3j6g
github.com/rubysec/ruby-advisory-db/blob/master/gems/addressable/CVE-2021-32740.yml
github.com/sporkmonger/addressable
github.com/sporkmonger/addressable/commit/0d8a3127e35886ce9284810a7f2438bff6b43cbc
github.com/sporkmonger/addressable/commit/89c76130ce255c601f642a018cb5fb5a80e679a7
github.com/sporkmonger/addressable/commit/92685096b1f7235ed8986c03ce30a24972eed848#diff-fb36d3dc67e6565ffde17e666a98697f48e76dac38fabf1bb9e97cdf3b583d76
github.com/sporkmonger/addressable/security/advisories/GHSA-jxhc-q857-3j6g
lists.fedoraproject.org/archives/list/[email protected]/message/SDFQM2NHNAZ3NNUQZEJTYECYZYXV4UDS
lists.fedoraproject.org/archives/list/[email protected]/message/WYPVOOQU7UB277UUERJMCNQLRCXRCIQ5
nvd.nist.gov/vuln/detail/CVE-2021-32740