CVE-2023-29483

Description

eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet from the expected IP address and source port, aka a "TuDoor" attack. In other words, dnspython does not have the preferred behavior in which the DNS name resolution algorithm would proceed, within the full time window, in order to wait for a valid packet. NOTE: dnspython 2.6.0 is unusable for a different reason that was addressed in 2.6.1.

How to fix CVE-2023-29483

To remediate CVE-2023-29483, upgrade the affected package to a fixed version below.

—upgrade to 2.6.1 or later
—upgrade to 2.6.1 or later
—upgrade to 0.35.2 or later
—upgrade to 0.35.2 or later

Is CVE-2023-29483 being exploited?

Low — EPSS is 1.9%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

from 0, < 2.6.1
from 0, < 2.6.1
from 0, < 0.35.2
from 0, < 0.35.2

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:N/I:N/A:H