#VU24061 Algorithm Downgrade in Mozilla Firefox - CVE-2019-17023

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Main Vulnerability Database Vulnerabilities #VU24061

#VU24061 Algorithm Downgrade in Mozilla Firefox - CVE-2019-17023

Published: January 7, 2020 / Updated: January 8, 2020


Vulnerability identifier: #VU24061
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-17023
CWE-ID: CWE-757
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mozilla Firefox
Software vendor:
Mozilla

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to insecure negotiation After a HelloRetryRequest in Mozilla NSS that can lead to selection of a less secure protocol (e.g. TLS 1.2 or below) after the HelloRetryRequest TLS 1.3 is sent.


Remediation

Install updates from vendor's website.

External links