CVE-2022-48566

MEDIUM

Python < 3.6.13 - Timing Attack via hmac.compare_digest

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Exploit, Issue Tracking, Patch, Vendor Advisory
https://bugs.python.org/issue40791
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html

Scores

CVSS v3 5.9
EPSS 0.0009
EPSS Percentile 25.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-362
Status published
Products (4)
debian/debian_linux 10.0
netapp/active_iq_unified_manager (2 CPE variants)
netapp/converged_systems_advisor_agent
python/python < 3.6.13
Published Aug 22, 2023
Tracked Since Feb 18, 2026