CVE-2023-29483
High
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.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Eventlet
PublishedApr 11, 2024
First seenApr 11, 2024
Weakness typeCWE-292CWE-292
How to fix
Update
- eventlet eventlet0.35.2 or later
- dnspython dnspython2.6.0 or later
- eventlet0.35.2 or later
- dnspython2.6.1 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VOHJOO3OM65UIUUUVDEXMCTXNM6LXZEH/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRKR57IFVKQC2GCXZBFLCLBAWBWL3F6/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3BNSIK5NFYSAP53Y45GOCMOQHHDLGIF/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eventlet eventlet | v < 0.35.2 | 0.35.2 |
| dnspython dnspython | v < 2.6.0 | 2.6.0 |
| fedoraproject fedora | 38, 39, 40 | — |
| netapp bootstrap_os | No range specified | — |
| eventletPyPI | v < 0.35.2 | 0.35.2 |
| dnspythonPyPI | v < 2.6.1 | 2.6.1 |
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