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High severity7.0NVD Advisory· Published Apr 11, 2024· Updated Jun 17, 2026

CVE-2023-29483

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
eventletPyPI
< 0.35.20.35.2
dnspythonPyPI
< 2.6.12.6.1

Affected products

162

Patches

Vulnerability mechanics

References

21

News mentions

0

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