CVE-2023-29483
Potential DoS via the Tudoor mechanism in eventlet and dnspython
5.9
MEDIUM
CVSS 3.1
EPSS 8.4%
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.
- —no fix listed
- —upgrade to 2.6.1 or later
- —upgrade to 0.35.2 or later
Is CVE-2023-29483 being exploited?
Moderate — EPSS is 8.4%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0
- from 0, < 2.6.1
- 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 |