Potential DoS via the Tudoor mechanism in eventlet and dnspython
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.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | dnspython | < 2.6.1 | 2.6.1 |
| Python (PyPI) | eventlet | < 0.35.2 | 0.35.2 |
Referencias
- https://nvd.nist.gov/vuln/detail/CVE-2023-29483
- https://github.com/eventlet/eventlet/issues/913
- https://github.com/rthalley/dnspython/issues/1045
- https://github.com/eventlet/eventlet/commit/51e3c4928d4938beb576eff34f3bf97e6e64e6b4
- https://github.com/rthalley/dnspython/commit/0ea5ad0a4583e1f519b9bcc67cfac381230d9cf2
- https://github.com/eventlet/eventlet
- https://github.com/eventlet/eventlet/releases/tag/v0.35.2
- https://github.com/rthalley/dnspython/releases/tag/v2.6.0
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRKR57IFVKQC2GCXZBFLCLBAWBWL3F6
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VOHJOO3OM65UIUUUVDEXMCTXNM6LXZEH
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3BNSIK5NFYSAP53Y45GOCMOQHHDLGIF
- https://security.netapp.com/advisory/ntap-20240510-0001
- https://security.snyk.io/vuln/SNYK-PYTHON-DNSPYTHON-6241713
- https://www.dnspython.org
- https://pypi.org/project/dnspython
- https://github.com/advisories/GHSA-3rq5-2g8h-59hc
- https://pypi.org/project/eventlet
- Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-696- Plataforma
- Python (PyPI)
- Paquete
dnspython, eventlet- Publicada
- 11.04.2024
- Actualizado
- 11.10.2026 15:17
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-1307 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2472 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-3rq5-2g8h-59hc - CC BY 4.0
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