Buffer overflow in Cisco Adaptive Security Appliance Software
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 class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Cisco Adaptive Security Appliance Software — versions 9.13.1, 9.13.1.2, 9.13.1.7
- Cisco Adaptive Security Appliance (Asa) Software — versions 9.14.1, 9.14.1.10, 9.14.1.15
- Cisco Firepower Services Software For Asa
- Cisco Firepower Threat Defense Software — versions 6.6.0, 6.6.0.1, 6.6.1
- Cisco Firepower Services Software For Asa
- Cisco Firepower Threat Defense — versions 6.6.0, 6.6.0.1, 6.6.1
- Cisco Secure Firewall Threat Defense — versions 6.6.0, 6.6.0.1, 6.6.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-20927?
- CVE-2022-20927 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.7/10. Published 2022-11-15.
- How severe is CVE-2022-20927?
- High severity. CVSS v3 base score is 7.7 out of 10.