SB2024041513 - Multiple vulnerabilities in Siemens RUGGEDCOM APE1808

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Inadequate encryption strength (CVE-ID: CVE-2023-48795)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect implementation of the SSH Binary Packet Protocol (BPP), which mishandles the handshake phase and the use of sequence numbers. A remote attacker can perform MitM attack and delete the SSH2_MSG_EXT_INFO message sent before authentication starts, allowing the attacker to disable a subset of the keystroke timing obfuscation features introduced in OpenSSH 9.5.

The vulnerability was dubbed "Terrapin attack" and it affects both client and server implementations.

2) Stored cross-site scripting (CVE-ID: CVE-2023-6789)

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote administrator can permanently inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

3) Improper Privilege Management (CVE-ID: CVE-2023-6793)

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to improper privilege management. A remote read-only administrator can revoke active XML API keys from the firewall and disrupt XML API usage.

4) Insufficient Session Expiration (CVE-ID: CVE-2024-0008)

The vulnerability allows a local attacker to gain access to sensitive information.

The vulnerability exists due to insufficient session expiration issue in the management interface. An attacker with physical access can obtain or guess session token and gain unauthorized access to session that belongs to another user.

5) Input validation error (CVE-ID: CVE-2023-38802)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing BGP update data with a corrupted attribute 23 (Tunnel Encapsulation). A remote attacker can send specially crafted BGP update data to the application and perform a denial of service (DoS) attack.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://cert-portal.siemens.com/productcert/txt/ssa-455250.txt