CVE-2021-21240: Regular Expression Denial of Service (REDoS) in httplib2
(updated )
A malicious server which responds with long series of \xa0 characters in the www-authenticate header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server.
References
- github.com/advisories/GHSA-93xj-8mrv-444m
- github.com/httplib2/httplib2
- github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc
- github.com/httplib2/httplib2/pull/182
- github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m
- github.com/pypa/advisory-database/tree/main/vulns/httplib2/PYSEC-2021-16.yaml
- nvd.nist.gov/vuln/detail/CVE-2021-21240
- pypi.org/project/httplib2
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