CVE-2019-10942 Denial of service in SCALANCE X-200 switch family (incl. SIPLUS NET variants)
Remote attackers can cause denial of service on Siemens SCALANCE switches by sending large message packages to the telnet service.
- 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-2019-10942?
CVE-2019-10942 is a high-severity denial of service vulnerability in Siemens SCALANCE X-200 switch family (incl. SIPLUS NET variants), published on 13 Aug 2019. 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 SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X204RNA (HSR) (All versions), SCALANCE X204RNA (PRP) (All versions), SCALANCE X204RNA EEC (HSR) (All versions), SCALANCE X204RNA EEC (PRP) (All versions), SCALANCE X204RNA EEC (PRP/HSR) (All versions). The device contains a vulnerability that could allow an attacker to trigger a denial-of-service condition by sending large message packages repeatedly to the telnet service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.
Weakness: CWE-400
Which versions are affected by CVE-2019-10942?
It affects 3 products.
Products include Siemens Scalance X-200 Firmware, Siemens Scalance X-200irt Firmware, Siemens Scalance X-200rna Firmware.
How do I fix CVE-2019-10942?
No fix has been published for CVE-2019-10942 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-2019-10942 being exploited?
There is no known exploitation of CVE-2019-10942 in the wild and no public exploit code.
Other vulnerabilities in Siemens SCALANCE X-200 switch family (incl. SIPLUS NET variants)
Sources
Also known as GHSA-fw8m-p8g9-xxpf.