02 July 2021
KLCERT-21-014: Robert Bosch GmbH CPP HD/MP cameras. Missing Authentication vulnerability for Critical Functions
Vendor
Robert Bosch GmbH
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CVE
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KLCERT
KLCERT-21-014
Timeline
Timeline
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Kaspersky ICS CERT advisory published
02 July 2021
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Robert Bosch GmbH published the advisory
09 June 2021
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Vulnerability reported
13 April 2021
Description
CVSS v3
Exploitability
⚠ Remotely exploitable: network access to ports 80/TCP or 443/TCP is required.
Attack complexity
Privilege required
User interaction
Impact
⚠ Missing authentication for critical functions in CPP HD/MP cameras allows an unauthenticated remote attacker to extract sensitive information or change settings by sending specially crafted requests to the devices.
Affected products
- CPP6 UHD/MP IP cameras:
- 7.70 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0128
- CPP7 UHD/MP IP cameras:
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0128
- CPP7.3 HD/MP IP cameras:
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0128
- AVIOTEC IP cameras:
- 7.61 – All firmware build versions
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions before 7.72.0013
Mitigation
Robert Bosch GmbH mitigation
Software Updates: The recommended approach is to update the affected Bosch firmware to a fixed version. If an update is not possible in timely manner, users are recommended to follow the mitigations and workarounds described in the following section.
Firewalling: Disallowing connections from insecure networks to the camera by means of a firewall prevents the attacker from accessing the vulnerable interface.
IP Filtering: The camera has the possibility to whitelist networks or IP addresses to only allow access from trusted networks or IPs, preventing an attacker from accessing the camera.
Using certificate based authentication: To mitigate the critical vulnerability CVE-2021-23847, certificate based user authentication for the camera can be used as the SSL based authentication happens, before the vulnerable component can be accessed. This prevents an unauthenticated attacker from accessing the interface.
Kaspersky publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky does not make any guarantees in respect of information received from vendors of products in which vulnerabilities have been identified, which is included in the following sections of the advisory: Affected Products, Vendor Mitigation.
