CVE-2021-27292 Information

Description

ua-parser-js >= 0.7.14 fixed in 0.7.24 uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header ua-parser-js will get stuck processing it for an extended period of time.

CVSS Vector

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

Reference

https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5