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CVE-2023-52323

Published: 5 January 2024

PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack.

Notes

AuthorNote
mdeslaur
Ubuntu 20.04 LTS and older contain a substantially older
codebase which would require major intrusive changes to
remediate all side-channel attacks. Due to the high risk of
regressions, we will not be fixing this issue in focal and
older. If this issue is critical in your environment, we
recommend migrating to a more recent version of Ubuntu.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
pycryptodome
Launchpad, Ubuntu, Debian
bionic Ignored

focal Ignored

jammy
Released (3.11.0+dfsg1-3ubuntu0.1)
lunar Ignored
(end of life, was needed)
mantic Needed

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)
Patches:
upstream: https://github.com/Legrandin/pycryptodome/commit/afb5e27a15efe59e33c2825d40ef44995c13b8bc
upstream: https://github.com/Legrandin/pycryptodome/commit/519e7aea6de4e8f03b62c6e1dba724aca738882e
upstream: https://github.com/Legrandin/pycryptodome/commit/0deea1bfe1489e8c80d2053bbb06a1aa0b181ebd

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N