CVE-2021-31892 Weak cryptography in SINUMERIK Analyse MyCondition
An attacker can perform a TLS man-in-the-middle attack due to missing server certificate validation in Siemens SINUMERIK software.
- 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-2021-31892?
CVE-2021-31892 is a high-severity vulnerability in Siemens SINUMERIK Analyse MyCondition, published on 13 Jul 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 SINUMERIK Analyse MyCondition (All versions), SINUMERIK Analyze MyPerformance (All versions), SINUMERIK Analyze MyPerformance /OEE-Monitor (All versions), SINUMERIK Analyze MyPerformance /OEE-Tuning (All versions), SINUMERIK Integrate Client 02 (All versions >= V02.00.12 < 02.00.18), SINUMERIK Integrate Client 03 (All versions >= V03.00.12 < 03.00.18), SINUMERIK Integrate Client 04 (V04.00.02 and all versions >= V04.00.15 < 04.00.18), SINUMERIK Integrate for Production 4.1 (All versions < V4.1 SP10 HF3), SINUMERIK Integrate for Production 5.1 (V5.1), SINUMERIK Manage MyMachines (All versions), SINUMERIK Manage MyMachines /Remote (All versions), SINUMERIK Manage MyMachines /Spindel Monitor (All versions), SINUMERIK Manage MyPrograms (All versions), SINUMERIK Manage MyResources /Programs (All versions), SINUMERIK Manage MyResources /Tools (All versions), SINUMERIK Manage MyTools (All versions), SINUMERIK Operate V4.8 (All versions < V4.8 SP8), SINUMERIK Operate V4.93 (All versions < V4.93 HF7), SINUMERIK Operate V4.94 (All versions < V4.94 HF5), SINUMERIK Optimize MyProgramming /NX-Cam Editor (All versions). Due to an error in a third-party dependency the ssl flags used for setting up a TLS connection to a server are overwitten with wrong settings. This results in a missing validation of the server certificate and thus in a possible TLS MITM szenario.
Weakness: CWE-295
Which versions are affected by CVE-2021-31892?
It affects 10 products.
Products include Siemens Sinumerik Analyse Mycondition Firmware, Siemens Sinumerik Analyze Myperformance Firmware, Siemens Sinumerik Integrate Client Firmware, Siemens Sinumerik Integrate for Production Firmware, Siemens Sinumerik Manage Mymachines Firmware, Siemens Sinumerik Manage Myprograms Firmware and 4 more.
How do I fix CVE-2021-31892?
No fix has been published for CVE-2021-31892 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-31892 being exploited?
There is no known exploitation of CVE-2021-31892 in the wild and no public exploit code.
Sources
Also known as GHSA-wr99-8g6h-68jx.