CVE-2022-247137.5HighCWE-400

CVE-2022-24713: Regular expression denial of service in Rust's regex crate

rust-lang · regex

Vendor fix available · Affected: rust-lang regex · Exploitation: likely to be exploited (10% or more)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

14.5%probability of exploitation in the next 30 days

96th percentile

050100

Higher than 96% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

rust-lang · regex< 1.5.5

On the Atlas

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Open the Atlas

Exploitation: Likely to be exploited (10% or more). EPSS gives it a 10% or higher chance of exploitation in the next 30 days.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Uncontrolled Resource Consumption · Denial of Service
Vendor: rust-lang
Published: March 2022
Band: Likely to be exploited (10% or more), March 2022
Bounty reports: 1 disclosed on HackerOne

Disclosed bug bounty reports about CVE-2022-24713

The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.

Regexes with large repetitions on empty sub-expressions take a very long time to parseInternet Bug Bounty · 2022 · high severityValid

CoverageNo articles yet

No CyberSIXT article names CVE-2022-24713 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.