Home/CVE/An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations
CVE

CVE-2022-48566

An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations

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.

MEDIUM · CVSS 5.9 EPSS 0.0009
Schedule remediation
  • Public exploit or PoC is available
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
▤

Affected Products & Versions

7
python< 3.6.13
python>= 3.7.0 and < 3.7.10
python>= 3.8.0 and < 3.8.7
python>= 3.9.0 and < 3.9.1
debian linuxall versions
netapp active iq unified managerall versions
netapp converged systems advisor agentall versions
⚠

Public Exploits & PoCs

1
pocbugs.python.org · issue40791bugs.python.org
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPython Reverse Shell Execution Via PTY And Socket Modules
producthighInline Python Execution - Spawn Shell Via OS System Library
producthighPython One-Liners with Base64 Decoding - Linux
producthighPython Function Execution Security Warning Disabled In Excel
producthighPython One-Liners with Base64 Decoding
producthighPython Spawning Pretty TTY on Windows
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Aug 2023 · 07:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

9
usnUSN-7180-1
usnUSN-6891-1
suse-csafopenSUSE-SU-2024:13253-1
suse-csafSUSE-SU-2024:1847-1
suse-csafSUSE-SU-2024:0901-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00017.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20231006-0013/Third Party Advisory
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