Incorrect Behavior Order Affecting dnspython package, versions [,2.6.1)
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.04% (15th
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-DNSPYTHON-6241713
- published 11 Feb 2024
- disclosed 9 Feb 2024
- credit rthalley
Introduced: 9 Feb 2024
CVE-2023-29483 Open this link in a new tabHow to fix?
Upgrade dnspython to version 2.6.1 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Behavior Order in the DNS pre-processing pipeline, which allows an off-path attacker who can spoof the source IP address of a malformed DNS response packet to cause denial of service. The UDP processing functions in query.py and asyncquery.py accept the first-arriving packet before closing the receiving socket, allowing the attacker to make the remote nameserver appear unavailable for the target resolver and clients.
References
CVSS Scores
version 3.1