Multiple vulnerabilities in Siemens SIMATIC WinCC Add-Ons

1) Stack-based buffer overflow

EUVDB-ID: #VU10111

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-11496

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The weakness exists due to stack-based buffer overflow. A remote attacker can send malformed ASN1 streams in V2C and similar input files, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC WinCC Add-On SIPAPER IT MIS: All versions

SIMATIC WinCC Add-On SICEMENT IT MIS: All versions

SIMATIC WinCC Add-On PM-QUALITY: All versions

SIMATIC WinCC Add-On PM-OPEN TCP/IP: All versions

SIMATIC WinCC Add-On PM-OPEN PV02: All versions

SIMATIC WinCC Add-On PM-OPEN PI: All versions

SIMATIC WinCC Add-On PM-OPEN IMPORT: All versions

SIMATIC WinCC Add-On PM-OPEN HOST-S: All versions

SIMATIC WinCC Add-On PM-OPEN EXPORT: All versions

SIMATIC WinCC Add-On PM-MAINT: All versions

SIMATIC WinCC Add-On PM-CONTROL: All versions

SIMATIC WinCC Add-On PM-ANALYZE: All versions

SIMATIC WinCC Add-On PM-AGENT: All versions

SIMATIC WinCC Add-On PI CONNECT AUDIT TRAIL: All versions

SIMATIC WinCC Add-On PI CONNECT ALARM: All versions

SIMATIC WinCC Add-On Historian CONNECT ALARM: All versions

CPE2.3

• cpe:2.3:a:siemens:simatic_wincc_add-on_sipaper_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_sicement_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-quality:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_tcp_ip:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pv02:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pi:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_import:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_host-s:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_export:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-maint:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-control:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-analyze:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-agent:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_audit_trail:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_alarm:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_historian_connect_alarm:*:*:*:*:*:*:*:*

External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-127490.pdf

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Stack-based buffer overflow

EUVDB-ID: #VU10112

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-11497

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The weakness exists due to stack-based buffer overflow. A remote attacker can send language packs containing malformed filenames, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC WinCC Add-On SIPAPER IT MIS: All versions

SIMATIC WinCC Add-On SICEMENT IT MIS: All versions

SIMATIC WinCC Add-On PM-QUALITY: All versions

SIMATIC WinCC Add-On PM-OPEN TCP/IP: All versions

SIMATIC WinCC Add-On PM-OPEN PV02: All versions

SIMATIC WinCC Add-On PM-OPEN PI: All versions

SIMATIC WinCC Add-On PM-OPEN IMPORT: All versions

SIMATIC WinCC Add-On PM-OPEN HOST-S: All versions

SIMATIC WinCC Add-On PM-OPEN EXPORT: All versions

SIMATIC WinCC Add-On PM-MAINT: All versions

SIMATIC WinCC Add-On PM-CONTROL: All versions

SIMATIC WinCC Add-On PM-ANALYZE: All versions

SIMATIC WinCC Add-On PM-AGENT: All versions

SIMATIC WinCC Add-On PI CONNECT AUDIT TRAIL: All versions

SIMATIC WinCC Add-On PI CONNECT ALARM: All versions

SIMATIC WinCC Add-On Historian CONNECT ALARM: All versions

CPE2.3

• cpe:2.3:a:siemens:simatic_wincc_add-on_sipaper_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_sicement_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-quality:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_tcp_ip:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pv02:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pi:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_import:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_host-s:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_export:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-maint:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-control:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-analyze:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-agent:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_audit_trail:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_alarm:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_historian_connect_alarm:*:*:*:*:*:*:*:*

External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-127490.pdf

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

3) Null pointer dereference

EUVDB-ID: #VU10113

Risk: Low

CVSSv4.0: 6.6 [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:Clear]

CVE-ID: CVE-2017-11498

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send language pack (ZIP file) with invalid HTML files, trigger NULL pointer dereference and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SIMATIC WinCC Add-On SIPAPER IT MIS: All versions

SIMATIC WinCC Add-On SICEMENT IT MIS: All versions

SIMATIC WinCC Add-On PM-QUALITY: All versions

SIMATIC WinCC Add-On PM-OPEN TCP/IP: All versions

SIMATIC WinCC Add-On PM-OPEN PV02: All versions

SIMATIC WinCC Add-On PM-OPEN PI: All versions

SIMATIC WinCC Add-On PM-OPEN IMPORT: All versions

SIMATIC WinCC Add-On PM-OPEN HOST-S: All versions

SIMATIC WinCC Add-On PM-OPEN EXPORT: All versions

SIMATIC WinCC Add-On PM-MAINT: All versions

SIMATIC WinCC Add-On PM-CONTROL: All versions

SIMATIC WinCC Add-On PM-ANALYZE: All versions

SIMATIC WinCC Add-On PM-AGENT: All versions

SIMATIC WinCC Add-On PI CONNECT AUDIT TRAIL: All versions

SIMATIC WinCC Add-On PI CONNECT ALARM: All versions

SIMATIC WinCC Add-On Historian CONNECT ALARM: All versions

CPE2.3

• cpe:2.3:a:siemens:simatic_wincc_add-on_sipaper_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_sicement_it_mis:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-quality:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_tcp_ip:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pv02:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_pi:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_import:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_host-s:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-open_export:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-maint:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-control:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-analyze:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pm-agent:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_audit_trail:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_pi_connect_alarm:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_add-on_historian_connect_alarm:*:*:*:*:*:*:*:*

External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-127490.pdf

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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