CVE-2022-33988
dproxy-nexgen (aka dproxy nexgen) re-uses the DNS transaction id (TXID) value from client queries, which allows attackers (able to send queries to the resolver) to conduct DNS cache-poisoning attacks because the TXID value is known to the attacker.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
dproxy-nexgen (aka dproxy nexgen) re-uses the DNS transaction id (TXID) value from client queries, which allows attackers (able to send queries to the resolver) to conduct DNS cache-poisoning attacks because the TXID value is known to the attacker.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.14% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- dproxy-nexgen project/dproxy-nexgen
- Source
- cve@mitre.org
References
- https://sourceforge.net/projects/dproxy/Product, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/14/3Exploit, Mailing List, Third Party Advisory
- https://www.usenix.org/conference/usenixsecurity22/presentation/jeitnerThird Party Advisory
- https://sourceforge.net/projects/dproxy/Product, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/14/3Exploit, Mailing List, Third Party Advisory
- https://www.usenix.org/conference/usenixsecurity22/presentation/jeitnerThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.