02 июля 2021
KLCERT-21-032: Robert Bosch GmbH CPP HD/MP cameras. Denial of Service via GET HTTP request
Vendor
Robert Bosch GmbH
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CVE
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KLCERT
KLCERT-21-032
Timeline
Timeline
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Kaspersky ICS CERT advisory published
02 июля 2021
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Robert Bosch GmbH published the advisory
09 июня 2021
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Vulnerability reported
30 апреля 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
⚠ It is possible to cause a DoS of the camera via specially crafted HTTP GET request to the web interface of CPP HD/MP cameras.
Affected products
- CPP4 HD/MP cameras:
- 7.10 – All firmware build versions before 7.10.0095
- CPP6 HD/MP cameras:
- 7.60 – All firmware build versions
- 7.61 – All firmware build versions
- 7.62 – All firmware build versions before 7.62.0005
- 7.70 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0129
- AVIOTEC cameras:
- 7.61 – All firmware build versions
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions before 7.72.0013
- CPP7 HD/MP cameras:
- 7.60 – All firmware build versions
- 7.61 – All firmware build versions
- 7.62 – All firmware build versions before 7.62.0005
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0129
- CPP7.3 HD/MP cameras:
- 7.60 – All firmware build versions
- 7.61 – All firmware build versions
- 7.62 – All firmware build versions before 7.62.0004
- 7.70 – All firmware build versions
- 7.72 – All firmware build versions
- 7.80 – All firmware build versions before 7.80.0129
- CPP13 HD/MP cameras:
- 7.75 – All firmware build versions before 7.75.0008
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.
Secure Configuration Environment: It is advised to use a Bosch tool like the Configuration Manager to configure the camera, that does not allow for issues like CSRF and XSS.
When using the web based configuration interface and currently being logged in as administrator, some security precautions can be taken to mitigate XSS and CSRF vulnerabilities:
- No other websites or email content should be opened as long as the session to the camera is active
- No links should be clicked from an untrusted external source that link back to the camera.
- Use a different browser than the system default browser to open a session to the camera as there is no XSS or CSRF between browsers.
- Always log out and/or close the browser (not only the tab) to clear any session data
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.
