CVE-2021-41546 Denial of service in RUGGEDCOM ROX MX5000

Q: Is CVE-2021-41546 being exploited?

There is no known exploitation of CVE-2021-41546 in the wild and no public exploit code.

Q: How do I fix CVE-2021-41546?

No fix has been published for CVE-2021-41546 yet. Limit exposure of the affected software until one is available.

High 7.5 Published 12 Oct 2021 Updated 4 Aug 2024

Attackers can trigger crashdumps that fill the filesystem, causing permanent denial of service on Siemens RUGGEDCOM ROX 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-2021-41546?

CVE-2021-41546 is a high-severity denial of service vulnerability in Siemens RUGGEDCOM ROX MX5000, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.14.1), RUGGEDCOM ROX RX1400 (All versions < V2.14.1), RUGGEDCOM ROX RX1500 (All versions < V2.14.1), RUGGEDCOM ROX RX1501 (All versions < V2.14.1), RUGGEDCOM ROX RX1510 (All versions < V2.14.1), RUGGEDCOM ROX RX1511 (All versions < V2.14.1), RUGGEDCOM ROX RX1512 (All versions < V2.14.1), RUGGEDCOM ROX RX1524 (All versions < V2.14.1), RUGGEDCOM ROX RX1536 (All versions < V2.14.1), RUGGEDCOM ROX RX5000 (All versions < V2.14.1). Affected devices write crashdumps without checking if enough space is available on the filesystem. Once the crashdump fills the entire root filesystem, affected devices fail to boot successfully. An attacker can leverage this vulnerability to cause a permanent Denial-of-Service.

Weakness: CWE-770, CWE-400

Which versions are affected by CVE-2021-41546?

It affects 10 products.

Products include Siemens Ruggedcom Rox Mx5000 Firmware, Siemens Ruggedcom Rox Rx1400 Firmware, Siemens Ruggedcom Rox Rx1500 Firmware, Siemens Ruggedcom Rox Rx1501 Firmware, Siemens Ruggedcom Rox Rx1510 Firmware, Siemens Ruggedcom Rox Rx1511 Firmware and 4 more.

How do I fix CVE-2021-41546?

No fix has been published for CVE-2021-41546 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-2021-41546 being exploited?

There is no known exploitation of CVE-2021-41546 in the wild and no public exploit code.

Sources

Also known as GHSA-pjfv-46pv-9q9c.