| Name | CVE-2022-48566 |
| Description | An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3575-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python2.7 (PTS) | buster | 2.7.16-2+deb10u1 | vulnerable |
| buster (security) | 2.7.16-2+deb10u3 | fixed |
| bullseye | 2.7.18-8 | vulnerable |
| python3.7 (PTS) | buster | 3.7.3-2+deb10u3 | vulnerable |
| buster (security) | 3.7.3-2+deb10u5 | vulnerable |
| python3.9 (PTS) | bullseye | 3.9.2-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - python2.7 <ignored> (Unsupported in Bullseye, only included to build a few applications)
https://bugs.python.org/issue40791
https://github.com/python/cpython/commit/8183e11d87388e4e44e3242c42085b87a878f781 (v3.9.0b2)
https://github.com/python/cpython/commit/c1bbca5b004b3f74d240ef8a76ff445cc1a27efb (v3.9.1rc1)
https://github.com/python/cpython/commit/db95802bdfac4d13db3e2a391ec7b9e2f8d92dbe (v3.7.10)
https://github.com/python/cpython/commit/8bef9ebb1b88cfa4b2a38b93fe4ea22015d8254a (v3.6.13)
https://github.com/python/cpython/issues/84968