SB2019121320 - Use of cryptographically weak pseudo-random number generator in Miek Gieben DNS library
Published: December 13, 2019 Updated: June 28, 2024
Security Bulletin ID
SB2019121320
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2019-19794)
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.
Remediation
Install update from vendor's website.