Resource Exhaustion The advisory has been revoked - it doesn't affect any version of package python-httplib2 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1404-PYTHONHTTPLIB2-1071843
- published11 Feb 2021
- disclosed8 Feb 2021
Introduced: 8 Feb 2021
CVE-2021-21240 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-httplib2 package and not the python-httplib2 package as distributed by Ubuntu.
httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, 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. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-21240
- https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m
- https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc
- https://github.com/httplib2/httplib2/pull/182
- https://pypi.org/project/httplib2