Advisory Details

November 14th, 2023

Siemens SINEMA Server sysLocation Cross-Site Scripting Remote Code Execution Vulnerability

ZDI-23-1600
ZDI-CAN-19823

CVE ID CVE-2023-35796
CVSS SCORE 7.5, AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Siemens
AFFECTED PRODUCTS SINEMA Server
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens SINEMA Server. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the processing of SNMP sysLocation OID. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS Siemens has issued an update to correct this vulnerability. More details can be found at:
https://cert-portal.siemens.com/productcert/html/ssa-594373.html
DISCLOSURE TIMELINE
  • 2023-04-13 - Vulnerability reported to vendor
  • 2023-11-14 - Coordinated public release of advisory
CREDIT Andreas Finstad
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