🛡️ CVE-2023-29483 — bootstrap-os
Description
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.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability high.
Affected software
CVE-2023-29483 is recorded against 4 packages.
- bootstrap-os
- dnspython (fixed in 2.6.1)
- eventlet (fixed in 0.35.2)
- fedora
Timeline and source
Published on 11 April 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.
References
github.com
github.com
github.com
github.com
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
security.netapp.com
security.snyk.io
www.dnspython.org
github.com
github.com
github.com
github.com
lists.fedoraproject.org
CVE-2023-29483 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| bootstrap-os | — | — |
| dnspython | — | 2.6.1 |
| eventlet | — | 0.35.2 |
| fedora | — | — |
References
Similar Threats
- Low CVE-2024-11053
- Medium CVE-2024-21140
- Low CVE-2024-2004
- High CVE-2023-50868
- High CVE-2024-1086
More CVE 2023 advisories
Browse all of CVE 2023 in the advisory index.
Exploit Protection
Are you running bootstrap-os?
CVE-2023-29483 carries CVSS 7.0 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
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