Use of a broken or risky cryptographic algorithm in Yaws - CVE-2020-12872
Published: May 15, 2020 / Updated: September 27, 2020
Vulnerability identifier: #VU47118
CSH Severity: 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-2020-12872
CWE-ID: CWE-327
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Yaws
Yaws
Software vendor:
yaws.hyber.org
yaws.hyber.org
Description
The vulnerability allows a remote attacker to decrypt sensitive information.
The vulnerability exists due to yaws_config.erl in Yaws loads obsolete TLS ciphers if running on an Erlang/OTP virtual machine with a version less than 21.0. A remote attacker can perform Sweet32 attack.
Remediation
Install updates from vendor's website.