CVE-2020-26311: useragent — Exploit

Description

Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no patches are available.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-1333 CWE-1333

Affected Products

Vendor	Product	Versions
useragent_project	useragent	All

References

Exploits

https://securitylab.github.com/advisories/GHSL-2020-312-redos-useragent/

Other References

https://github.com/3rd-Eden/useragent/issues/167

Frequently Asked Questions

What is CVE-2020-26311? +

Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no patches are available. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-26311? +

CVE-2020-26311 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2020-26311? +

CVE-2020-26311 affects products from useragent_project, specifically: useragent. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2020-26311? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2020-26311