CVE-2021-23852 Denial of Service (DoS) due to invalid web parameter

What is CVE-2021-23852?

CVE-2021-23852 is a medium-severity denial of service vulnerability in Bosch CPP Firmware, published on 9 Jun 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An authenticated attacker with administrator rights Bosch IP cameras can call an URL with an invalid parameter that causes the camera to become unresponsive for a few seconds and cause a Denial of Service (DoS).

Weakness: CWE-400

Which versions are affected by CVE-2021-23852?

It affects 5 products.

Products include Bosch Cpp13 Firmware, Bosch Cpp4 Firmware, Bosch Cpp6 Firmware, Bosch Cpp7.3 Firmware, Bosch Cpp7 Firmware.

How do I fix CVE-2021-23852?

No fix has been published for CVE-2021-23852 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-23852 being exploited?

There is no known exploitation of CVE-2021-23852 in the wild and no public exploit code.

Other vulnerabilities in Bosch CPP Firmware

• CVE-2021-23848 Reflected XSS in URL handler High 8.3
• CVE-2021-23853 Improper Input Validation of HTTP Headers High 8.3
• CVE-2021-23854 Reflected XSS in page parameter High 8.3
• CVE-2023-39509 Command injection in Camera Firmware High 7.2
• CVE-2022-41677 Information disclosure in Camera Firmware Medium 5.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hr85-6mv6-mcm7.