Potential DoS via the Tudoor mechanism in eventlet and dnspython
GHSA-3rq5-2g8h-59hc · CVE-2023-29483 · PYSEC-2026-1307 · PYSEC-2026-2472
Published · Modified
AI SAST
Find this class of vulnerability in your own code
Corgea's AI-native static analysis detects vulnerabilities like this one across your repositories, ranks them by exploitability, and returns review-ready fixes.
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.
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-29483
- WEB https://github.com/eventlet/eventlet/issues/913
- WEB https://github.com/rthalley/dnspython/issues/1045
- WEB https://github.com/eventlet/eventlet/commit/51e3c4928d4938beb576eff34f3bf97e6e64e6b4
- WEB https://github.com/rthalley/dnspython/commit/0ea5ad0a4583e1f519b9bcc67cfac381230d9cf2
- PACKAGE https://github.com/eventlet/eventlet
- WEB https://github.com/eventlet/eventlet/releases/tag/v0.35.2
- WEB https://github.com/rthalley/dnspython/releases/tag/v2.6.0
- WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRKR57IFVKQC2GCXZBFLCLBAWBWL3F6
- WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VOHJOO3OM65UIUUUVDEXMCTXNM6LXZEH
- WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3BNSIK5NFYSAP53Y45GOCMOQHHDLGIF
- WEB https://security.netapp.com/advisory/ntap-20240510-0001
- WEB https://security.snyk.io/vuln/SNYK-PYTHON-DNSPYTHON-6241713
- WEB https://www.dnspython.org
Ready to move
Start Securing
Free, no credit card | First findings in minutes