Zero-day vulnerability in Crypto Application Server (CAS)

Improper access control

Vulnerability details

Advisory: SB2022082211 - Improper access control in General Bytes Crypto Application Server (CAS)

Vulnerable component: Crypto Application Server (CAS)

CVE-ID:

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:H/RL:O/RC:C

CWE-ID: CWE-284 - Improper Access Control

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper access restrictions to the default installation page. A remote attacker can connect to the default installation URL and create an administrative user account.

Note, the vulnerability is being active exploited in the wild.

External links:

https://generalbytes.atlassian.net/wiki/spaces/ESD/pages/2785509377/Security+Incident+August+18th+2022


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.