eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to…
Priority MEDIUM 64CWE-292Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · High
- Fix status
- Partial Red Hat: 8 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01857 79th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial eventlet (PyPI): 0.35.2dnspython (PyPI): 2.6.1Red Hat: 7 advisoriesRed Hat: 8 fixed, 4 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | eventlet (PyPI) | before 0.35.2 | 0.35.2 | Patch available | GHSA-3rq5-2g8h-59hc |
| — | dnspython (PyPI) | before 2.6.1 | 2.6.1 | Patch available | GHSA-3rq5-2g8h-59hc |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- eventlet (PyPI) Vendor— Affected before 0.35.2 Fixed in 0.35.2 Patch available GHSA-3rq5-2g8h-59hc
- dnspython (PyPI) Vendor— Affected before 2.6.1 Fixed in 2.6.1 Patch available GHSA-3rq5-2g8h-59hc
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eventlet:eventlet:*:*:*:*:*:*:*:* | before 0.35.2 | Vulnerable | eventlet |
| cpe:2.3:a:dnspython:dnspython:*:*:*:*:*:*:*:* | before 2.6.0 | Vulnerable | Dnspython |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* | 39 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* | 40 | Vulnerable | Fedoraproject |
| cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:a:eventlet:eventlet:*:*:*:*:*:*:*:* Versions before 0.35.2 Vulnerable ·eventlet
- cpe:2.3:a:dnspython:dnspython:*:*:*:*:*:*:*:* Versions before 2.6.0 Vulnerable ·Dnspython
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* Versions 39 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* Versions 40 Vulnerable ·Fedoraproject
- cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
- Fix · GHSA-3rq5-2g8h-59hc eventlet (PyPI) Fixed in 0.35.2 Advisory →
- Fix · GHSA-3rq5-2g8h-59hc dnspython (PyPI) Fixed in 2.6.1 Advisory →
Red Hat 7 advisories
- RHSA-2024:9423 Released 2024-11-12 · Red Hat rating Moderatepython-dns security update
- Red Hat Enterprise Linux BaseOS (v. 9) python-dns-2.6.1-3.el9, python3-dns-2.6.1-3.el9
- RHSA-2024:4960 Released 2024-08-07 · Red Hat rating ImportantOpenShift Container Platform 4.14.34 bug fix and security update
- Red Hat OpenShift Container Platform 4.14 openshift4/ose-aws-ebs-csi-driver-rhel8, openshift4/ose-cloud-credential-operator, openshift4/ose-ibm-vpc-block-csi-driver-operator-rhel8 +6
- RHSA-2024:4846 Released 2024-07-31 · Red Hat rating ModerateOpenShift Container Platform 4.13.46 security update
- Red Hat OpenShift Container Platform 4.13 openshift4/ose-cloud-credential-operator, openshift4/ose-cluster-image-registry-operator, openshift4/ose-ibm-vpc-block-csi-driver-operator-rhel8 +3
Show 4 more Red Hat advisories
- RHSA-2024:4699 Released 2024-07-25 · Red Hat rating ImportantOpenShift Container Platform 4.15.23 bug fix and security update
- Red Hat OpenShift Container Platform 4.15 openshift4/ose-cloud-credential-operator, openshift4/ose-ibm-vpc-block-csi-driver-operator-rhel8, openshift4/ose-ibm-vpc-block-csi-driver-rhel9 +4
- RHSA-2024:0045 Released 2024-06-27 · Red Hat rating ImportantOpenShift Container Platform 4.16.0 security update
- Ironic content for Red Hat OpenShift Container Platform 4.16 python-eventlet-0.33.1-6.el9, python3-eventlet-0.33.1-6.el9
- Red Hat OpenShift Container Platform 4.16 butane-0.21.0-1.rhaos4.16.el8, butane-redistributable-0.21.0-1.rhaos4.16.el8, cri-o-1.29.5-5.rhaos4.16.git7032128.el8 +43
- RHSA-2024:3483 Released 2024-05-30 · Red Hat rating ModerateRed Hat Ansible Automation Platform 2.4 Container Security and Bug Fix Update
- Red Hat Ansible Automation Platform 2.4 for RHEL 8 ansible-automation-platform-24/ee-supported-rhel8
- Red Hat Ansible Automation Platform 2.4 for RHEL 9 ansible-automation-platform-24/ee-supported-rhel9
- RHSA-2024:3275 Released 2024-05-22 · Red Hat rating Moderatepython-dns security update
- Red Hat Enterprise Linux BaseOS (v. 8) python-dns-1.15.0-12.el8_10, python3-dns-1.15.0-12.el8_10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 17.1 | Affected | No fix planned: Will not fix |
| Ironic content for Red Hat OpenShift Container Platform 4.16 | Fixed | RHSA-2024:0045 |
| Red Hat Ansible Automation Platform 2.4 for RHEL 8 | Fixed | RHSA-2024:3483 |
| Red Hat Ansible Automation Platform 2.4 for RHEL 9 | Fixed | RHSA-2024:3483 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:3275 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:9423 |
| Red Hat OpenShift Container Platform 4.13 | Fixed | RHSA-2024:4846 |
| Red Hat OpenShift Container Platform 4.14 | Fixed | RHSA-2024:4960 |
| Red Hat OpenShift Container Platform 4.15 | Fixed | RHSA-2024:4699 |
Not affected: 9 products
- Ironic content for Red Hat OpenShift Container Platform 4.16
- Red Hat Ansible Automation Platform 2
- Red Hat Ansible Automation Platform 2.4 for RHEL 8
- Red Hat Ansible Automation Platform 2.4 for RHEL 9
- Red Hat Enterprise Linux 10
- Red Hat OpenShift Container Platform 4.13
- Red Hat OpenShift Container Platform 4.14
- Red Hat OpenShift Container Platform 4.15
- Red Hat OpenShift Container Platform 4.16
Timeline
- 2026-10-02 Threatist record created from CVE-2023-29483
- 2026-10-03 Alias added: GHSA-3rq5-2g8h-59hc
References
Exploit 2
Advisory 5
Other 11
- https://www.dnspython.org/
- https://github.com/rthalley/dnspython/releases/tag/v2.6.0
- https://github.com/eventlet/eventlet/releases/tag/v0.35.2
- https://github.com/eventlet/eventlet/commit/51e3c4928d4938beb576eff34f3bf97e6e64e6b4
- https://github.com/rthalley/dnspython/commit/0ea5ad0a4583e1f519b9bcc67cfac381230d9cf2
- https://github.com/eventlet/eventlet
- 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://www.dnspython.org
Sources
- CVE-2023-29483 · CVE Program
- CVE-2023-29483 · NVD
- FIRST EPSS
- GHSA-3rq5-2g8h-59hc · GitHub Advisory Database · CC BY 4.0
- CVE-2023-29483 · Red Hat security data · CC BY 4.0
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