CVE Vulnerability

CVE-2022-24713

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/rust-lang/regex/security/advisories/GHSA-m5pq-gvj9-9vr8 Third Party Advisory
https://github.com/rust-lang/regex/commit/ae70b41d4f46641dbc45c7a4f87954aea356283e Patch Third Party Advisory
https://groups.google.com/g/rustlang-security-announcements/c/NcNNL1Jq7Yw Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PDOWTHNVGBOP2HN27PUFIGRYNSNDTYRJ/ 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.debian.org/debian-lts-announce/2022/04/msg00003.html Mailing List Third Party Advisory
https://www.debian.org/security/2022/dsa-5113 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00009.html Mailing List Third Party Advisory
https://www.debian.org/security/2022/dsa-5118 Third Party Advisory
https://security.gentoo.org/glsa/202208-14 Third Party Advisory
https://security.gentoo.org/glsa/202208-08 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:rust-lang:regex:*:*:*:*:*:rust:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Information

Published : 2022-03-08 07:15

Updated : 2023-01-20 06:05

NVD link : CVE-2022-24713

Mitre link : CVE-2022-24713

Products Affected
No products.
CWE
CWE-400