Viber for Windows up to 13.2.0.39 does not properly quote its custom URI handler. A malicious website could launch Viber with arbitrary parameters, forcing a victim to send an NTLM authentication request, and either relay the request or capture the hash for offline password cracking. NOTE: this issue exists because of an incomplete fix for CVE-2019-12569.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14049
Reference (s):
- https://jeffs.sh/CVEs/CVE-2020-14049.txt
- https://www.viber.com/en/security/