Regular expression denial of service in Rust's regex crate
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| rust-lang | regex | affected |
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Configuration 1 [-]
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Configuration 2 [-]
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Configuration 3 [-]
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| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | |||
| firefox-0:91.8.0-1.el7_9 | cpe:/o:redhat:enterprise_linux:7 | RHSA-2022:1284 | 2022-04-08T00:00:00Z |
| thunderbird-0:91.8.0-1.el7_9 | cpe:/o:redhat:enterprise_linux:7 | RHSA-2022:1302 | 2022-04-11T00:00:00Z |
| Red Hat Enterprise Linux 8 | |||
| firefox-0:91.8.0-1.el8_5 | cpe:/a:redhat:enterprise_linux:8 | RHSA-2022:1287 | 2022-04-08T00:00:00Z |
| thunderbird-0:91.8.0-1.el8_5 | cpe:/a:redhat:enterprise_linux:8 | RHSA-2022:1301 | 2022-04-11T00:00:00Z |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | |||
| firefox-0:91.8.0-1.el8_1 | cpe:/a:redhat:rhel_e4s:8.1 | RHSA-2022:1283 | 2022-04-08T00:00:00Z |
| thunderbird-0:91.8.0-1.el8_1 | cpe:/a:redhat:rhel_e4s:8.1 | RHSA-2022:1303 | 2022-04-11T00:00:00Z |
| Red Hat Enterprise Linux 8.2 Extended Update Support | |||
| firefox-0:91.8.0-1.el8_2 | cpe:/a:redhat:rhel_eus:8.2 | RHSA-2022:1286 | 2022-04-08T00:00:00Z |
| thunderbird-0:91.8.0-1.el8_2 | cpe:/a:redhat:rhel_eus:8.2 | RHSA-2022:1326 | 2022-04-12T00:00:00Z |
| Red Hat Enterprise Linux 8.4 Extended Update Support | |||
| firefox-0:91.8.0-1.el8_4 | cpe:/a:redhat:rhel_eus:8.4 | RHSA-2022:1285 | 2022-04-08T00:00:00Z |
| thunderbird-0:91.8.0-1.el8_4 | cpe:/a:redhat:rhel_eus:8.4 | RHSA-2022:1305 | 2022-04-11T00:00:00Z |
No data available yet.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2971-1 | firefox-esr security update |
Debian DLA |
DLA-2978-1 | thunderbird security update |
Debian DSA |
DSA-5113-1 | firefox-esr security update |
Debian DSA |
DSA-5118-1 | thunderbird security update |
EUVD |
EUVD-2022-1468 | 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. |
Github GHSA |
GHSA-m5pq-gvj9-9vr8 | Rust's regex crate vulnerable to regular expression denial of service |
Ubuntu USN |
USN-5370-1 | Firefox vulnerabilities |
Ubuntu USN |
USN-5610-1 | rust-regex vulnerability |
No CVSS v4.0
No CVSS v3.0
This CVE is not in the KEV list.
Exploit prediction score: 14.5% (14.460% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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