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.
CVSS Details
- CVSS 3.1 Base Score: 7
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-python3-dns | May 31, 2024 | Apr 11, 2024 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-python-dns | Oct 3, 2024 | Apr 11, 2024 | |
| Debian | no-fix-debian-deb-package | May 15, 2025 | Apr 11, 2024 | |
| Huawei Euleros 2_0_sp10 | huawei-euleros-2_0_sp10-upgrade-python3-dns | Jan 14, 2025 | Apr 11, 2024 | |
| Huawei Euleros 2_0_sp11 | huawei-euleros-2_0_sp11-upgrade-python3-dns | Oct 9, 2024 | Apr 11, 2024 | |
| Huawei Euleros 2_0_sp12 | huawei-euleros-2_0_sp12-upgrade-python3-dns | Oct 9, 2024 | Apr 11, 2024 | |
| Huawei Euleros 2_0_sp9 | huawei-euleros-2_0_sp9-upgrade-python3-dns | Jan 15, 2025 | Apr 11, 2024 | |
| Oracle_linux | — | oracle-linux-upgrade-python3-dns | May 30, 2024 | Feb 9, 2024 |
| Redhat Openshift | linuxrpm-upgrade-python-eventlet | Jun 28, 2024 | Apr 11, 2024 | |
| Redhat_linux | no-fix-redhat-rpm-packageredhat-upgrade-python3-dns | May 23, 2024 | Apr 11, 2024 | |
| Suse | — | suse-upgrade-python-dnspythonsuse-upgrade-python3-dnspythonsuse-upgrade-python311-dnspython | Jul 26, 2024 | Apr 11, 2024 |
| Ubuntu | no-fix-ubuntu-package | Jun 26, 2025 | Apr 11, 2024 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Apr 11, 2024 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub