CVE-2022-39280

low-risk
Published 2022-10-06

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.

Do I need to act?

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0.84% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Dependency Parser

Affected Vendors

Pyup

References (8)

Patch https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5
Patch https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614
Third Party Advisory https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq
Technical Description https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_R...
Patch https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5
Patch https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614
Third Party Advisory https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq
Technical Description https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_R...
26
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal