CVE-2023-29483DEPRECATED: Trusting Self-reported DNS Name in Dnspython

Severity
7.0HIGHNVD
EPSS
5.0%
top 10.33%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedApr 11

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:HExploitability: 2.2 | Impact: 4.7

Affected Packages5 packages

NVDdnspython/dnspython< 2.6.0
PyPIdnspython/dnspython< 2.6.1
Debiandnspython/dnspython< 2.6.0-1+1
NVDeventlet/eventlet< 0.35.2
PyPIeventlet/eventlet< 0.35.2

Also affects: Fedora 38, 39, 40

🔴Vulnerability Details

4
GHSA
Potential DoS via the Tudoor mechanism in eventlet and dnspython2024-04-11
OSV
CVE-2023-29483: eventlet before 02024-04-11
CVEList
CVE-2023-29483: eventlet before 02024-04-11
OSV
Potential DoS via the Tudoor mechanism in eventlet and dnspython2024-04-11

📋Vendor Advisories

2
Red Hat
dnspython: denial of service in stub resolver2024-02-09
Debian
CVE-2023-29483: dnspython - eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attacke...2023
CVE-2023-29483 — Dnspython vulnerability | cvebase