Multiple vulnerabilities in Siemens SIPROTEC 4 and SIPROTEC Compact



| Updated: 2017-07-07
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2016-7112
CVE-2016-7113
CVE-2016-7114
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 SIPROTEC 4
Hardware solutions / Security hardware applicances

Siprotec Compact
Hardware solutions / Security hardware applicances

Vendor Siemens

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU7382

Risk: Medium

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:Green]

CVE-ID: CVE-2016-7112

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The weakness exists due to an error related to EN100 Ethernet module. A remote attacker can send specially crafted HTTP request and bypass access restrictions.

Successful exploitation of the vulnerability results in administrative access to the system.

Mitigation

Update SIPROTEC 4 to version 4.29.
Update SIPROTEC Compact to version 4.29.

Vulnerable software versions

SIPROTEC 4: 4.24 - 4.28

Siprotec Compact: 4.24 - 4.28

CPE2.3 External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-630413.pdf


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) Denial of service

EUVDB-ID: #VU7383

Risk: Medium

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:Green]

CVE-ID: CVE-2016-7113

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition.

The weakness exists due to an error in the EN100 Ethernet module. A remote attacker can send specially crafted HTTP packets to TCP port 80 and cause the device to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update SIPROTEC 4 to version 4.29.
Update SIPROTEC Compact to version 4.29.

Vulnerable software versions

SIPROTEC 4: 4.24 - 4.28

Siprotec Compact: 4.24 - 4.28

CPE2.3 External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-630413.pdf


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.

3) Security restrictions bypass

EUVDB-ID: #VU7384

Risk: Medium

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:Green]

CVE-ID: CVE-2016-7114

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The weakness exists due to an error related to EN100 Ethernet module. A remote attacker can send specially crafted HTTP request and bypass access restrictions.

Successful exploitation of the vulnerability results in administrative access to the system.

Mitigation

Update SIPROTEC 4 to version 4.29.
Update SIPROTEC Compact to version 4.29.

Vulnerable software versions

SIPROTEC 4: 4.24 - 4.28

Siprotec Compact: 4.24 - 4.28

CPE2.3 External links

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-630413.pdf


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.



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