CVE-2017-6865 Denial of service in Primary Setup Tool (PST)
Attackers can cause denial of service in Siemens industrial software by sending crafted PROFINET DCP broadcast packets on the local network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6865?
CVE-2017-6865 is a medium-severity denial of service vulnerability in Siemens AG Primary Setup Tool (PST), published on 11 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in Primary Setup Tool (PST) (All versions < V4.2 HF1), SIMATIC Automation Tool (All versions < V3.0), SIMATIC NET PC-Software (All versions < V14 SP1), SIMATIC PCS 7 V8.1 (All versions), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1), SIMATIC STEP 7 (TIA Portal) V13 (All versions < V13 SP2), SIMATIC STEP 7 (TIA Portal) V14 (All versions < V14 SP1), SIMATIC STEP 7 V5.X (All versions < V5.6), SIMATIC WinAC RTX 2010 SP2 (All versions), SIMATIC WinAC RTX F 2010 SP2 (All versions), SIMATIC WinCC (TIA Portal) V13 (All versions < V13 SP2), SIMATIC WinCC (TIA Portal) V14 (All versions < V14 SP1), SIMATIC WinCC V7.2 and prior (All versions), SIMATIC WinCC V7.3 (All versions < V7.3 Update 15), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd1), SIMATIC WinCC flexible 2008 (All versions < flexible 2008 SP5), SINAUT ST7CC (All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15), SINEMA Server (All versions < V14), SINUMERIK 808D Programming Tool (All versions < V4.7 SP4 HF2), SMART PC Access (All versions < V2.3), STEP 7 - Micro/WIN SMART (All versions < V2.3), Security Configuration Tool (SCT) (All versions < V5.0). Specially crafted PROFINET DCP broadcast packets sent to the affected products on a local Ethernet segment (Layer 2) could cause a Denial-of-Service condition of some services. The services require manual restart to recover.
Weakness: CWE-20
Which versions are affected by CVE-2017-6865?
It affects 16 products.
Products include Siemens Pcs 7, Siemens Primary Setup Tool, Siemens Security Configuration Tool, Siemens Simatic Automation Tool, Siemens Simatic Net Pc-Software, Siemens Simatic Step 7 \(Tia Portal\) and 10 more.
How do I fix CVE-2017-6865?
No fix has been published for CVE-2017-6865 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-2017-6865 being exploited?
There is no known exploitation of CVE-2017-6865 in the wild and no public exploit code.
Sources
Also known as GHSA-8jhv-ch7h-fqpj.