Multiple vulnerabilities in Hitachi Energy RTU500 series CMU



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-1968
CVE-2020-24977
CVE-2021-3517
CWE-ID CWE-200
CWE-125
CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
 RTU500 CMU
Hardware solutions / Firmware

Vendor Hitachi Energy

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Raccoon attack

EUVDB-ID: #VU46573

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1968

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a timing flaw in the TLS specification. A remote attacker can compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite and eavesdrop on all encrypted communications sent over that TLS connection.

Note: The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections.

Mitigation

Install update from vendor's website.

Vulnerable software versions

RTU500 CMU: 11.0 - 13.2.1

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-336-08
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000064&LanguageCode=en&DocumentPartId=&Action=Launch


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) Out-of-bounds read

EUVDB-ID: #VU46737

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-24977

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the xmlEncodeEntitiesInternal() function in libxml2/entities.c in libxml2. A remote attacker can pas specially crafted XML data to the affected application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

RTU500 CMU: 11.0 - 13.2.1

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-336-08
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000064&LanguageCode=en&DocumentPartId=&Action=Launch


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) Out-of-bounds write

EUVDB-ID: #VU54224

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-2021-3517

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the xml entity encoding functionality. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

RTU500 CMU: 11.0 - 13.2.1

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-21-336-08
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000064&LanguageCode=en&DocumentPartId=&Action=Launch


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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