CVE-2022-48566: Race Condition
First published: Tue Aug 22 2023(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Python Python | <3.6.13 | |
| Python Python | >=3.7.0<3.7.10 | |
| Python Python | >=3.8.0<3.8.7 | |
| Python Python | >=3.9.0<3.9.1 | |
| Debian Debian Linux | =10.0 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| Netapp Active Iq Unified Manager Windows | ||
| Netapp Converged Systems Advisor Agent | ||
| debian/pypy3 | 7.3.5+dfsg-2+deb11u2 7.3.5+dfsg-2+deb11u3 7.3.11+dfsg-2+deb12u2 7.3.17+dfsg-2 | |
| debian/python2.7 | 2.7.18-8+deb11u1 | |
| debian/python3.9 | 3.9.2-1 |
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Reference Links
- https://bugs.python.org/issue40791
- https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
- https://security.netapp.com/advisory/ntap-20231006-0013/
- https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html
- https://launchpad.net/bugs/cve/CVE-2022-48566
- https://github.com/python/cpython/commit/8183e11d87388e4e44e3242c42085b87a878f781
- https://github.com/python/cpython/commit/c1bbca5b004b3f74d240ef8a76ff445cc1a27efb
- https://github.com/python/cpython/commit/db95802bdfac4d13db3e2a391ec7b9e2f8d92dbe
- https://github.com/python/cpython/commit/8bef9ebb1b88cfa4b2a38b93fe4ea22015d8254a
- https://github.com/python/cpython/issues/84968
- https://security-tracker.debian.org/tracker/CVE-2022-48566
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48566
- https://nvd.nist.gov/vuln/detail/CVE-2022-48566
- https://ubuntu.com/security/CVE-2022-48566
Frequently Asked Questions
What is CVE-2022-48566?
CVE-2022-48566 is a vulnerability discovered in Python through 3.9.1 that allows for constant-time-defeating optimizations in the accumulator variable of hmac.compare_digest.
How severe is CVE-2022-48566?
CVE-2022-48566 has a severity score of 8.1, which is classified as high.
What software is affected by CVE-2022-48566?
Python versions 3.6.0 through 3.9.1 are affected. Additionally, specific versions of Python 2.7 and 3.5 for Ubuntu and Python 2.7, 3.7, and 3.9 for Debian are also affected.
How can I fix CVE-2022-48566?
To fix CVE-2022-48566, update your Python installation to the latest patched version available for your operating system.
Where can I find more information about CVE-2022-48566?
More information about CVE-2022-48566 can be found at the following references: [1] [2] [3]
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