Vulnerability Description
A buffer over-read vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wibu | Codemeter | <= 7.21a |
| Siemens | Pss Cape | - |
| Siemens | Sicam 230 Firmware | All versions |
| Siemens | Sicam 230 | - |
| Siemens | Simatic Information Server | 2019 |
| Siemens | Simatic Pcs Neo | < 3.1 |
| Siemens | Simatic Wincc Oa | 3.17 |
| Siemens | Simit Simulation Platform | >= 10.0, < 10.3 |
| Siemens | Sinec Infrastructure Network Services | < 1.0.1.1 |
| Siemens | Sinema Remote Connect Server | < 3.0 |
| Siemens | Simatic Process Historian | >= 2019, < 2020 |
Related Weaknesses (CWE)
References
- https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-MitigationVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdfPatchThird Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02Third Party AdvisoryUS Government Resource
- https://www.tenable.com/security/research/tra-2021-24ExploitPatchThird Party Advisory
- https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-MitigationVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdfPatchThird Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02Third Party AdvisoryUS Government Resource
- https://www.tenable.com/security/research/tra-2021-24ExploitPatchThird Party Advisory
FAQ
What is CVE-2021-20093?
CVE-2021-20093 is a vulnerability with a CVSS score of 9.1 (CRITICAL). A buffer over-read vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to disclose heap memory contents or crash the CodeMeter Ru...
How severe is CVE-2021-20093?
CVE-2021-20093 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-20093?
Check the references section above for vendor advisories and patch information. Affected products include: Wibu Codemeter, Siemens Pss Cape, Siemens Sicam 230 Firmware, Siemens Sicam 230, Siemens Simatic Information Server.