CVE-2019-9583 Denial of service in n/a

High 8.2 Published Updated

Attackers can obtain session IDs without login, enabling Denial of Service and facilitating further attacks on Homematic CCU2 and CCU3 devices.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-9583?

CVE-2019-9583 is a high-severity denial of service vulnerability in n/a, published on 14 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.

Weakness: CWE-400

Which versions are affected by CVE-2019-9583?

It affects 2 products.

Products include Eq-3 Homematic Ccu2 Firmware, Eq-3 Homematic Ccu3 Firmware.

How do I fix CVE-2019-9583?

No fix has been published for CVE-2019-9583 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-2019-9583 being exploited?

There is no known exploitation of CVE-2019-9583 in the wild and no public exploit code.

Sources

Also known as GHSA-49c8-8f9w-rcc6.

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