Main Vulnerability Database Vulnerabilities #VU93491

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in DNS library in Go - CVE-2019-19794

Published: June 28, 2024

Vulnerability identifier: #VU93491

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-19794

CWE-ID: CWE-338

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to poison DNS cache.

The vulnerability exists due to usage of predictable random numbers for TXID. A remote attacker can forge DNS responses.

DNS library in Go
CoreDNS
Red Hat OpenStack

Install updates from vendor's website.

DNS library in Go - update to 1.1.25
CoreDNS - update to 1.6.6
Red Hat OpenStack - update to 16.2