CVE-2019-10929 Security feature bypass in SIMATIC CP 1626
Attackers in a Man-in-the-Middle position can bypass integrity protection to modify network traffic on port 102/tcp for Siemens SIMATIC 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-2019-10929?
CVE-2019-10929 is a medium-severity vulnerability in Siemens SIMATIC CP 1626, 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 SIMATIC CP 1626 (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V20.8), SIMATIC HMI Panel (incl. SIPLUS variants) (All versions), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.8.1), SIMATIC S7-1500 Software Controller (All versions < V20.8), SIMATIC S7-PLCSIM Advanced (All versions < V3.0), SIMATIC STEP 7 (TIA Portal) (All versions < V16), SIMATIC WinCC (TIA Portal) (All versions < V16), SIMATIC WinCC OA (All versions < V3.16 P013), SIMATIC WinCC Runtime Advanced (All versions < V16), SIMATIC WinCC Runtime Professional (All versions < V16), TIM 1531 IRC (incl. SIPLUS NET variants) (All versions < V2.1). Affected devices contain a message protection bypass vulnerability due to certain properties in the calculation used for integrity protection. This could allow an attacker in a Man-in-the-Middle position to modify network traffic sent on port 102/tcp to the affected devices.
Weakness: CWE-327
Which versions are affected by CVE-2019-10929?
It affects 20 products.
Products include Siemens Simatic Cp 1626 Firmware, Siemens Simatic Et 200sp Open Controller Cpu 1515sp Pc2 Firmware, Siemens Simatic Et 200sp Open Controller Cpu 1515sp Pc Firmware, Siemens Simatic Hmi Panel Firmware, Siemens Simatic Net Pc, Siemens Simatic S7-1200 Cpu 1211c Firmware and 14 more.
How do I fix CVE-2019-10929?
No fix has been published for CVE-2019-10929 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-10929 being exploited?
There is no known exploitation of CVE-2019-10929 in the wild and no public exploit code.
Sources
Also known as GHSA-77j2-3682-mqmj.