Attack Chain

1. The attacker gains valid credentials for a user account on a system running Erlang/OTP.
2. The attacker establishes a remote connection to the Erlang/OTP system using the compromised credentials.
3. The attacker interacts with the vulnerable component of Erlang/OTP.
4. Due to the unspecified vulnerability, the system improperly handles the attacker’s requests.
5. The attacker is able to bypass intended security controls.
6. Sensitive information, such as configuration data or user data, is exposed to the attacker.
7. The attacker collects the disclosed information.
8. The attacker uses the information for further malicious activities, such as lateral movement or data exfiltration (outside the scope of this advisory).

Impact

Successful exploitation of this vulnerability allows a remote, authenticated attacker to gain unauthorized access to sensitive information stored or processed by Erlang/OTP. The impact includes potential compromise of user data, exposure of internal configurations, and other confidential data. The extent of the impact depends on the type of information accessible through the vulnerability and the attacker’s subsequent actions.

Recommendation

• Investigate the Erlang/OTP systems to identify vulnerable components and apply necessary patches or mitigations once available from the vendor.
• Monitor Erlang/OTP logs for suspicious activity indicative of unauthorized access attempts, focusing on unusual patterns of authenticated requests (see example Sigma rule below).
• Implement strong authentication mechanisms and regularly review user access privileges to minimize the risk of credential compromise.