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 Subscribe |
RTU500 CMU Hardware solutions / Firmware |
| Vendor | ABB |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Raccoon attack
EUVDB-ID: #VU46573
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-1968
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsRTU500 CMU: 11.0 - 13.2.1
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-336-08
http://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
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-24977
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsRTU500 CMU: 11.0 - 13.2.1
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-336-08
http://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
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3517
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsRTU500 CMU: 11.0 - 13.2.1
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-336-08
http://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.
