dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is vulnerable to a Regular Expression Denial of Service. All the users parsing index server URLs with dparse are impacted by this vulnerability. A patch has been applied in version `0.5.2`, all the users are advised to upgrade to `0.5.2` as soon as possible. Users unable to upgrade should avoid passing index server URLs in the source file to be parsed.
The product does not properly control the allocation and maintenance of a limited resource.
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
| Link | Tags |
|---|---|
| https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS | third party advisory technical description |
| https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq | third party advisory |
| https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5 | third party advisory patch |
| https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614 | third party advisory patch |