Vulnerability Details : CVE-2021-32740
Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. An uncontrolled resource consumption vulnerability exists after version 2.3.0 through version 2.7.0. 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 is patched in version 2.8.0. As a workaround, only create Template objects from trusted sources that have been validated not to produce catastrophic backtracking.
Vulnerability category: Denial of service
Products affected by CVE-2021-32740
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- Addressable Project » Addressable » For RubyVersions from including (>=) 2.3.0 and before (<) 2.8.0cpe:2.3:a:addressable_project:addressable:*:*:*:*:*:ruby:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-32740
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-32740
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2021-32740
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Secondary)
- security-advisories@github.com (Primary)
References for CVE-2021-32740
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYPVOOQU7UB277UUERJMCNQLRCXRCIQ5/
[SECURITY] Fedora 34 Update: rubygem-addressable-2.7.0-5.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://github.com/sporkmonger/addressable/commit/0d8a3127e35886ce9284810a7f2438bff6b43cbc
Adding note about ReDoS vulnerability · sporkmonger/addressable@0d8a312 · GitHubPatch;Release Notes;Third Party Advisory
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https://github.com/sporkmonger/addressable/security/advisories/GHSA-jxhc-q857-3j6g
Regular Expression Denial of Service in Addressable templates · Advisory · sporkmonger/addressable · GitHubThird Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SDFQM2NHNAZ3NNUQZEJTYECYZYXV4UDS/
[SECURITY] Fedora 33 Update: rubygem-addressable-2.7.0-5.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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