| Name | CVE-2021-21240 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 982738 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-httplib2 (PTS) | bullseye | 0.18.1-3 | vulnerable |
| bookworm | 0.20.4-3 | fixed |
| trixie, sid | 0.22.0-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - python-httplib2 <no-dsa> (Minor issue)
[buster] - python-httplib2 <no-dsa> (Minor issue)
[stretch] - python-httplib2 <no-dsa> (Minor issue)
https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m
https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc (v0.19.0)
https://github.com/httplib2/httplib2/pull/182