PT-2022-21951 · Unknown · Dproxy-Nexgen

Haya Shulman + 2 · Published 2022-08-15 · Updated 2022-08-18 · CVE-2022-33989

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions dproxy-nexgen (affected versions not specified)

Description The issue allows DNS cache poisoning due to the use of a static UDP source port with insufficient entropy to prevent traffic injection attacks. This occurs because dproxy-nexgen selects the UDP source port randomly only at boot time in upstream queries sent to DNS resolvers.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-331

Related Identifiers

CVE-2022-33989

Affected Products

Dproxy-Nexgen

References · 7

• 🔥 https://openwall.com/lists/oss-security/2022/08/14/3 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-33989 · Security Note
• https://t.me/cvenotify/34896 · Telegram Post
• https://usenix.org/conference/usenixsecurity22/presentation/jeitner · Note
• https://sourceforge.net/projects/dproxy · Note
• https://t.me/cibsecurity/48156 · Telegram Post
• https://t.me/cvenotify/34667 · Telegram Post