NULL pointer dereference in Siemens products - CVE-2023-28766

Vulnerability identifier: #VU75042

CSH Severity: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2023-28766

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
SIPROTEC 5 6MD85 (CP200)
SIPROTEC 5 6MD86 (CP200)
SIPROTEC 5 7KE85 (CP200)
SIPROTEC 5 7SA82 (CP100)
SIPROTEC 5 7SA86 (CP200)
SIPROTEC 5 7SA87 (CP200)
SIPROTEC 5 7SD82 (CP100)
SIPROTEC 5 7SD84 (CP200)
SIPROTEC 5 7SD86 (CP200)
SIPROTEC 5 7SD87 (CP200)
SIPROTEC 5 7SJ81 (CP100)
SIPROTEC 5 7SJ82 (CP100)
SIPROTEC 5 7SJ85 (CP200)
SIPROTEC 5 7SJ86 (CP200)
SIPROTEC 5 7SK82 (CP100)
SIPROTEC 5 7SK85 (CP200)
SIPROTEC 5 7SL82 (CP100)
SIPROTEC 5 7SL86 (CP200)
SIPROTEC 5 7SL87 (CP200)
SIPROTEC 5 7SS85 (CP200)
SIPROTEC 5 7ST85 (CP200)
SIPROTEC 5 7UT82 (CP100)
SIPROTEC 5 7UT85 (CP200)
SIPROTEC 5 7UT86 (CP200)
SIPROTEC 5 7UT87 (CP200)
SIPROTEC 5 7VK87 (CP200)
SIPROTEC 5 7SA82 (CP150)
SIPROTEC 5 7SD82 (CP150)
SIPROTEC 5 7SJ81 (CP150)
SIPROTEC 5 7SJ82 (CP150)
SIPROTEC 5 7SK82 (CP150)
SIPROTEC 5 7SL82 (CP150)
SIPROTEC 5 7SX82 (CP150)
SIPROTEC 5 7UT82 (CP150)
SIPROTEC 5 7VU85 (CP300)
SIPROTEC 5 6MD89 (CP300)
SIPROTEC 5 7ST85 (CP300)
SIPROTEC 5 6MD85 (CP300)
SIPROTEC 5 6MD86 (CP300)
SIPROTEC 5 6MU85 (CP300)
SIPROTEC 5 7KE85 (CP300)
SIPROTEC 5 7SA86 (CP300)
SIPROTEC 5 7SA87 (CP300)
SIPROTEC 5 7SD86 (CP300)
SIPROTEC 5 7SD87 (CP300)
SIPROTEC 5 7SJ85 (CP300)
SIPROTEC 5 7SJ86 (CP300)
SIPROTEC 5 7SK85 (CP300)
SIPROTEC 5 7SL86 (CP300)
SIPROTEC 5 7SL87 (CP300)
SIPROTEC 5 7SS85 (CP300)
SIPROTEC 5 7ST86 (CP300)
SIPROTEC 5 7SX85 (CP300)
SIPROTEC 5 7UM85 (CP300)
SIPROTEC 5 7UT85 (CP300)
SIPROTEC 5 7UT86 (CP300)
SIPROTEC 5 7UT87 (CP300)
SIPROTEC 5 7VE85 (CP300)
SIPROTEC 5 7VK87 (CP300)
SIPROTEC 5 Communication Module ETH-BA-2EL
SIPROTEC 5 Communication Module ETH-BB-2FO
SIPROTEC 5 Communication Module ETH-BD-2FO
SIPROTEC 5 Compact 7SX800 (CP050)
SIPROTEC 5 7SA84 (CP200)

Software vendor:
Siemens

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/pdf/ssa-322980.pdf