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CVE-2023-29483

Dnspython vulnerability

7.0 HIGHPublic exploitEPSS 1.86%
  1. Published11 Apr 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected products

Dnspython< 2.6.0
Eventlet< 0.35.2
Fedoraproject Fedora38 · 39 · 40
Netapp Bootstrap OSall versions

Remediation

Fixed in
Dnspython≥ 2.6.0
Eventlet≥ 0.35.2

References

and 2 more references

Frequently asked

Is CVE-2023-29483 being actively exploited?

CVE-2023-29483 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.86%.

How severe is CVE-2023-29483?

CVE-2023-29483 has a CVSS 3.1 base score of 7.0, rated high. EPSS estimates a 1.86% probability of exploitation.

Which products are affected by CVE-2023-29483?

Affected products include Dnspython, Eventlet, Fedoraproject Fedora, Netapp Bootstrap OS.

How do I fix CVE-2023-29483?

Upgrade affected software to a fixed version, for example Dnspython 2.6.0, Eventlet 0.35.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-29483 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.