Vulnerability Details : CVE-2021-20093
Potential exploit
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.
Products affected by CVE-2021-20093
- cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinema_remote_connect_server:3.0:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinema_remote_connect_server:3.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_oa:3.18:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_oa:3.17:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_pcs_neo:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:pss_cape:-:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_information_server:2019:sp1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_information_server:2020:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinec_infrastructure_network_services:1.0.1:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:simit_simulation_platform:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simit_simulation_platform:10.3:-:*:*:*:*:*:*
- cpe:2.3:o:siemens:sicam_230_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_process_historian:*:*:*:*:*:*:*:*
- cpe:2.3:h:siemens:simatic_process_historian:2020:-:*:*:*:*:*:*
- cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20093
7.56%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20093
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:P |
10.0
|
4.9
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2021-20093
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-20093
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02
Wibu-Systems CodeMeter Runtime | CISAThird Party Advisory;US Government Resource
-
https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf
Patch;Third Party Advisory
-
https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-01.pdf
Mitigation;Vendor Advisory
-
https://www.tenable.com/security/research/tra-2021-24
Multiple Vulnerabilities in Wibu-Systems CodeMeter - Research Advisory | Tenable®Exploit;Patch;Third Party Advisory
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