#VU18432 Cryptographic issues in HAProxy - CVE-2019-11323
Published: May 11, 2019
Vulnerability identifier: #VU18432
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-11323
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
HAProxy
HAProxy
Software vendor:
HAProxy
HAProxy
Description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incorrect reload with rotated keys, that results in usage of uninitialized, and very predictable, HMAC keys. A remote attacker can send a specially crafted request to the application and force it to use weak encryption.
Remediation
Install updates from vendor's website.