CVE-2023-38380 Memory corruption in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants)
A memory leak in the webserver allows remote attackers to cause a denial-of-service condition in Siemens SIMATIC communication processors.
- 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-2023-38380?
CVE-2023-38380 is a high-severity memory corruption vulnerability in Siemens SIMATIC CP 1242-7 V2 (incl. SIPLUS variants), published on 12 Dec 2023. 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 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE (All versions < V3.4.29), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) (All versions < V2.3), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0) (All versions < V3.0.37), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SINAMICS S210 (6SL5...) (All versions >= V6.1 < V6.1 HF2), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) (All versions < V2.3), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0) (All versions < V3.0.37). The webserver implementation of the affected products does not correctly release allocated memory after it has been used. An attacker with network access could use this vulnerability to cause a denial-of-service condition in the webserver of the affected product.
Weakness: CWE-401
Which versions are affected by CVE-2023-38380?
It affects 9 products.
Products include Siemens 6ag1543-1ax00-2xe0 Firmware, Siemens 6gk7243-8rx30-0xe0 Firmware, Siemens 6gk7543-1ax00-0xe0 Firmware, Siemens Simatic Cp 1242-7 V2 Firmware, Siemens Simatic Cp 1243-1 Dnp3 Firmware, Siemens Simatic Cp 1243-1 Firmware and 3 more.
How do I fix CVE-2023-38380?
No fix has been published for CVE-2023-38380 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-38380 being exploited?
There is no known exploitation of CVE-2023-38380 in the wild and no public exploit code.
Sources
Also known as GHSA-532g-fpxj-7pxx.