| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| dnspython (PTS) | buster | 1.16.0-1+deb10u1 | vulnerable |
| bullseye | 2.0.0-1 | vulnerable | |
| bookworm | 2.3.0-1 | vulnerable | |
| sid, trixie | 2.6.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| dnspython | source | (unstable) | 2.6.0-1 |
[bookworm] - dnspython <ignored> (Minor issue)
[bullseye] - dnspython <ignored> (Minor issue)
[buster] - dnspython <ignored> (Minor issue)
https://www.dnspython.org/news/2.6.0rc1/
https://github.com/rthalley/dnspython/commit/f66e25b5f549acf66d1fb6ead13eb3cff7d09af3 (v2.6.0rc1)
https://github.com/rthalley/dnspython/commit/e093299a49967696b1c58b68e4767de5031a3e46 (v2.6.0)
Upstream recommends not backporting fix:
https://github.com/rthalley/dnspython/issues/1051#issuecomment-1949383928