Multiple vulnerabilities in EIPStackGroup OpENer Ethernet/IP
| Risk | Medium |
| Patch available | NO |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2021-27482 CVE-2021-27478 CVE-2021-27500 CVE-2021-27498 CVE-2021-21777 |
| CWE-ID | CWE-681 CWE-125 CWE-617 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
OpENer Server applications / Other server solutions |
| Vendor | EIP Stack Group |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
Updated 21.06.2021
Added vulnerability #5
1) Incorrect Conversion between Numeric Types
EUVDB-ID: #VU52300
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-27482
CWE-ID:
CWE-681 - Incorrect Conversion between Numeric Types
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect conversion between numeric types in OpENer EtherNet/IP. A remote attacker can send a specifically crafted packet and cause a denial of service condition on the target system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsOpENer: 1.2.0 - 2.3
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-105-02
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: #VU52301
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-27478
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 in OpENer EtherNet/IP. A remote attacker can send a specifically crafted packet, trigger out-of-bounds read error and read contents of memory on the system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsOpENer: 1.2.0 - 2.3
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-105-02
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) Reachable Assertion
EUVDB-ID: #VU52302
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-27500
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion in OpENer EtherNet/IP. A remote attacker can send a specially crafted packet and cause a denial of service condition on the target system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsOpENer: 1.2.0 - 2.3
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-105-02
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.
4) Reachable Assertion
EUVDB-ID: #VU52303
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-27498
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion in OpENer EtherNet/IP. A remote attacker can send a specially crafted packet and cause a denial of service condition on the target system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsOpENer: 1.2.0 - 2.3
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-105-02
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.
5) Out-of-bounds read
EUVDB-ID: #VU54253
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2021-21777
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the Ethernet/IP UDP handler functionality. A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsOpENer: 2.3
External linkshttp://talosintelligence.com/vulnerability_reports/TALOS-2021-1234
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.
