A regular expression denial of service (ReDoS) vulnerability has been discovered in ua-parser-js
.
This vulnerability bypass the library’s MAX_LENGTH
input limit prevention. By crafting a very-very-long user-agent string with specific pattern, an attacker can turn the script to get stuck processing for a very long time which results in a denial of service (DoS) condition.
All versions of the library prior to version 0.7.33
/ 1.0.33
.
A patch has been released to remove the vulnerable regular expression, update to version 0.7.33
/ 1.0.33
or later.
Regular expression Denial of Service - ReDoS
Thanks to @Snyk who first reported the issue.
CPE | Name | Operator | Version |
---|---|---|---|
ua-parser-js | lt | 1.0.33 | |
ua-parser-js | lt | 0.7.33 |