Siemens WinCC Web Navigator contains a vulnerability that could allow an unauthenticated, remote attacker to conduct SQL injection attacks on a targeted system. Updates are available.
A vulnerability in the Siemens WinCC Web Navigator application could allow an unauthenticated, remote attacker to conduct SQL injection attacks on a targeted system.
The vulnerability is due to insufficient sanitization of user-supplied input by the WinCC Web Navigator login screen before the input is used in a SQL query. An attacker could exploit this vulnerability by sending crafted SQL statements to the login screen of the affected application, allowing injection of SQL statements into queries. An exploit could allow the attacker to execute arbitrary SQL queries on the underlying database, which could be used to conduct further attacks.
Siemens has confirmed this vulnerability and released updated software.
The following Siemens products are affected:
WinCC versions 7.2 and prior
SIMATIC PCS7 versions 8.0 SP1 and prior
To exploit the vulnerability, the attacker must submit malicious requests to the targeted system. In a typical network configuration, the attacker must access trusted, internal networks to submit malicious requests to the system. This access requirement could reduce the likelihood of a successful exploit.
Siemens has released a security advisory at the following link: SSA-345843
ICS-CERT has released a security advisory at the following link: ICSA-13-169-02
An unauthenticated, remote attacker could exploit this vulnerability to execute SQL commands on the back-end database. Command execution could allow the attacker to modify the underlying application database or access sensitive information from database records.
Technical information is not available.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
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