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.

How to fix CVE-2022-48566

To remediate CVE-2022-48566, upgrade the affected package to a fixed version below.

Bitnami/libpython—upgrade to 3.6.13 or later
Bitnami/python—upgrade to 3.6.13 or later
—upgrade to 3.6.13 or later
—upgrade to 7.3.5+dfsg-2 or later
—upgrade to 2.7.18-8+deb11u1 or later
—upgrade to 3.9.1~rc1-1 or later

Is CVE-2022-48566 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (6)

from 0, < 3.6.13, >= 3.7.0, < 3.7.10, >= 3.8.0, < 3.8.7, >= 3.9.0, < 3.9.1
from 0, < 3.6.13, >= 3.7.0, < 3.7.10, >= 3.8.0, < 3.8.7, >= 3.9.0, < 3.9.1
from 0, < 3.6.13, >= 3.7.0, < 3.7.10, >= 3.8.0, < 3.8.7, >= 3.9.0, < 3.9.1
from 0, < 7.3.5+dfsg-2
from 0, < 2.7.18-8+deb11u1
from 0, < 3.9.1~rc1-1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N