Multiple vulnerabilities in Siemens SIMATIC CP Devices

1) Heap-based buffer overflow

EUVDB-ID: #VU65271

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34819

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when parsing specific messages. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC CP 1242-7 V2: All versions

SIMATIC CP 1243-1: All versions

SIMATIC CP 1243-7 LTE EU: All versions

SIMATIC CP 1243-7 LTE US: All versions

SIMATIC CP 1243-8 IRC: All versions

SIMATIC CP 1542SP-1 IRC: 2.0

SIMATIC CP 1543SP-1: 2.0

SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL: 2.0

SIPLUS NET CP 1242-7 V2: All versions

SIPLUS S7-1200 CP 1243-1: All versions

SIPLUS S7-1200 CP 1243-1 RAIL: All versions

SIMATIC CP 1543-1: before 3.0.22

SIPLUS NET CP 1543-1: before 3.0.22

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-517377.pdficsa-22-195-12

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Command Injection

EUVDB-ID: #VU65272

Risk: Low

CVSSv3.1: 7.3 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34820

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary commands on the target system.

The vulnerability exists due to the affected application does not correctly escape some user provided fields during the authentication process. A remote administrator on the local network can pass specially crafted data to the application and execute arbitrary commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC CP 1242-7 V2: All versions

SIMATIC CP 1243-1: All versions

SIMATIC CP 1243-7 LTE EU: All versions

SIMATIC CP 1243-7 LTE US: All versions

SIMATIC CP 1243-8 IRC: All versions

SIMATIC CP 1542SP-1 IRC: 2.0

SIMATIC CP 1543SP-1: 2.0

SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL: 2.0

SIPLUS NET CP 1242-7 V2: All versions

SIPLUS S7-1200 CP 1243-1: All versions

SIPLUS S7-1200 CP 1243-1 RAIL: All versions

SIMATIC CP 1543-1: before 3.0.22

SIPLUS NET CP 1543-1: before 3.0.22

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-517377.pdficsa-22-195-12

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Code Injection

EUVDB-ID: #VU65274

Risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34821

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation within the specific configuration options for OpenVPN. A remote administrator on the local network can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC CP 1242-7 V2: All versions

SIMATIC CP 1243-1: All versions

SIMATIC CP 1243-7 LTE EU: All versions

SIMATIC CP 1243-7 LTE US: All versions

SIMATIC CP 1243-8 IRC: All versions

SIMATIC CP 1542SP-1 IRC: 2.0

SIMATIC CP 1543SP-1: 2.0

SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC: 2.0

SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL: 2.0

SIPLUS NET CP 1242-7 V2: All versions

SIPLUS S7-1200 CP 1243-1: All versions

SIPLUS S7-1200 CP 1243-1 RAIL: All versions

SIMATIC CP 1543-1: before 3.0.22

SIPLUS NET CP 1543-1: before 3.0.22

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-517377.pdficsa-22-195-12

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.