Buffer overflow in Siemens products - CVE-2021-31893
Published: July 14, 2021
Vulnerability identifier: #VU54869
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-31893
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
SIMATIC PCS 7
SIMATIC PDM
SIMATIC STEP 7
SINAMICS STARTER
SIMATIC PCS 7
SIMATIC PDM
SIMATIC STEP 7
SINAMICS STARTER
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing certain files. A remote authenticated attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2021-31893
Install updates from vendor's website.