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CVE-2022-24713 Detail

Current Description

regex is an implementation of regular expressions for the Rust language. The regex crate features built-in mitigations to prevent denial of service attacks caused by untrusted regexes, or untrusted input matched by trusted regexes. Those (tunable) mitigations already provide sane defaults to prevent attacks. This guarantee is documented and it's considered part of the crate's API. Unfortunately a bug was discovered in the mitigations designed to prevent untrusted regexes to take an arbitrary amount of time during parsing, and it's possible to craft regexes that bypass such mitigations. This makes it possible to perform denial of service attacks by sending specially crafted regexes to services accepting user-controlled, untrusted regexes. All versions of the regex crate before or equal to 1.5.4 are affected by this issue. The fix is include starting from regex 1.5.5. All users accepting user-controlled regexes are recommended to upgrade immediately to the latest version of the regex crate. Unfortunately there is no fixed set of problematic regexes, as there are practically infinite regexes that could be crafted to exploit this vulnerability. Because of this, it us not recommend to deny known problematic regexes.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  GitHub, Inc.
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/rust-lang/regex/commit/ae70b41d4f46641dbc45c7a4f87954aea356283e Patch  Third Party Advisory 
https://github.com/rust-lang/regex/security/advisories/GHSA-m5pq-gvj9-9vr8 Third Party Advisory 
https://groups.google.com/g/rustlang-security-announcements/c/NcNNL1Jq7Yw Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/04/msg00003.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/04/msg00009.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JANLZ3JXWJR7FSHE57K66UIZUIJZI67T/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3YB7CURSG64CIPCDPNMGPE4UU24AB6H/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PDOWTHNVGBOP2HN27PUFIGRYNSNDTYRJ/ Mailing List  Third Party Advisory 
https://www.debian.org/security/2022/dsa-5113 Third Party Advisory 
https://www.debian.org/security/2022/dsa-5118 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption cwe source acceptance level NIST   Contributor acceptance level GitHub, Inc.  

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-24713
NVD Published Date:
03/08/2022
NVD Last Modified:
06/03/2022
Source:
GitHub, Inc.