Vulnerability Details : CVE-2022-20927
A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2022-20927
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.13:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1.30:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.12:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1.15:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1.10:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.1.19:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.2.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.2.8:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.2.13:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.2.15:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.9:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.11:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.13:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.15:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.14.3.18:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.7:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.10:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.15:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.16:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.17:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.15.1.21:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.7:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.10:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.16:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.19:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.13.1.21:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_services_software_for_asa:-:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.5.0 and up to, including, (<=) 6.5.0.5cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- Cisco » Firepower Threat DefenseVersions from including (>=) 6.7.0 and up to, including, (<=) 6.7.0.3cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.4:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.6.5.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-20927
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-20927
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST | |
|
7.7
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
3.1
|
4.0
|
Cisco Systems, Inc. |
CWE ids for CVE-2022-20927
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2022-20927
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssl-client-dos-cCrQPkA
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Client Denial of Service VulnerabilityPatch;Vendor Advisory
-
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssl-client-dos-cCrQPkA
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Client Denial of Service Vulnerability
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