CVE-2021-43307
HIGHCVSS 7.5/10EPSS 1.46%
Last modified
CVE-2021-43307 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the semver-regex npm package, when an attacker is able to supply arbitrary input to the test() method. EPSS estimates a 1.46% chance of exploitation in the next 30 days.
Description
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the semver-regex npm package, when an attacker is able to supply arbitrary input to the test() method
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Semver-Regex Project | Semver-Regex | < 3.1.4 |
| Semver-Regex Project | Semver-Regex | >= 4.0.0, < 4.0.3 |
References
- https://research.jfrog.com/vulnerabilities/semver-regex-redos-xray-211349/Exploit, Third Party Advisory
- https://research.jfrog.com/vulnerabilities/semver-regex-redos-xray-211349/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43307?
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the semver-regex npm package, when an attacker is able to supply arbitrary input to the test() method
How severe is CVE-2021-43307?
CVE-2021-43307 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43307?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-43307?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST