CVE-2022-33989 json
dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resol…
published 2022-08-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-37022
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks.
Exploit prediction
1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- openwall.com https://www.openwall.com/lists/oss-security/2022/08/14/3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
openwall.com
/lists/oss-security/2022/08/14/3
exploit, mailing-list, third-party-advisory
-
sourceforge.net
/projects/dproxy/
third-party-advisory
-
usenix.org
/conference/usenixsecurity22/presentation/jeitner
third-party-advisory
Sources
- CVE List CVE-2022-33989
- NVD CVE-2022-33989
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