CVE-2022-33989

medium

Description

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.

References

Advisories
More

https://www.usenix.org/conference/usenixsecurity22/presentation/jeitner

https://sourceforge.net/projects/dproxy/

https://www.openwall.com/lists/oss-security/2022/08/14/3

Details

Source: Mitre, NVD

Published: 2022-08-15

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00075