Vulnerabilities > CVE-2022-34821 - Code Injection vulnerability in Siemens products
Summary
A vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (All versions < V7.2), RUGGEDCOM RM1224 LTE(4G) NAM (All versions < V7.2), SCALANCE M804PB (All versions < V7.2), SCALANCE M812-1 ADSL-Router (Annex A) (All versions < V7.2), SCALANCE M812-1 ADSL-Router (Annex B) (All versions < V7.2), SCALANCE M816-1 ADSL-Router (Annex A) (All versions < V7.2), SCALANCE M816-1 ADSL-Router (Annex B) (All versions < V7.2), SCALANCE M826-2 SHDSL-Router (All versions < V7.2), SCALANCE M874-2 (All versions < V7.2), SCALANCE M874-3 (All versions < V7.2), SCALANCE M876-3 (EVDO) (All versions < V7.2), SCALANCE M876-3 (ROK) (All versions < V7.2), SCALANCE M876-4 (All versions < V7.2), SCALANCE M876-4 (EU) (All versions < V7.2), SCALANCE M876-4 (NAM) (All versions < V7.2), SCALANCE MUM853-1 (EU) (All versions < V7.2), SCALANCE MUM856-1 (EU) (All versions < V7.2), SCALANCE MUM856-1 (RoW) (All versions < V7.2), SCALANCE S615 (All versions < V7.2), SCALANCE S615 EEC (All versions < V7.2), SCALANCE SC622-2C (All versions < V2.3), SCALANCE SC622-2C (All versions >= V2.3 < V3.0), SCALANCE SC626-2C (All versions < V2.3), SCALANCE SC626-2C (All versions >= V2.3 < V3.0), SCALANCE SC632-2C (All versions < V2.3), SCALANCE SC632-2C (All versions >= V2.3 < V3.0), SCALANCE SC636-2C (All versions < V2.3), SCALANCE SC636-2C (All versions >= V2.3 < V3.0), SCALANCE SC642-2C (All versions < V2.3), SCALANCE SC642-2C (All versions >= V2.3 < V3.0), SCALANCE SC646-2C (All versions < V2.3), SCALANCE SC646-2C (All versions >= V2.3 < V3.0), SCALANCE WAM763-1 (All versions), SCALANCE WAM766-1 (EU) (All versions), SCALANCE WAM766-1 (US) (All versions), SCALANCE WAM766-1 EEC (EU) (All versions), SCALANCE WAM766-1 EEC (US) (All versions), SCALANCE WUM763-1 (All versions), SCALANCE WUM763-1 (All versions), SCALANCE WUM766-1 (EU) (All versions), SCALANCE WUM766-1 (US) (All versions), SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). By injecting code to specific configuration options for OpenVPN, an attacker could execute arbitrary code with elevated privileges.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.