CVE-2022-34294 json
totd 1.5.3 uses a fixed UDP source port in upstream queries sent to DNS resolvers.
published 4y ago modified 4mo ago also EUVD-2022-37254
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
totd 1.5.3 uses a fixed UDP source port in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks.
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Check with FencerExploit prediction
1.90% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- openwall.com https://www.openwall.com/lists/oss-security/2022/08/14/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
openwall.com
/lists/oss-security/2022/08/14/2
exploit, mailing-list, third-party-advisory
-
usenix.org
/conference/usenixsecurity22/presentation/jeitner
technical-description, third-party-advisory
-
github.com
/fwdillema/totd
third-party-advisory
-
blackhat.com
/presentations/bh-jp-08/bh-jp-08-Kaminsky/BlackHat-Japan-08-Kaminsky-DNS08-BlackOps.pdf
third-party-advisory
Sources
- CVE List CVE-2022-34294
- NVD CVE-2022-34294
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