Vulnerability in Cisco Adaptive Security Appliance Software
CVE-2023-20006
A vulnerability in the hardware-based SSL/TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to an implementation error within the cryptographic functions for SSL/TLS traffic processing when they are offloaded to the hardware. An attacker could exploit this vulnerability by sending a crafted stream of SSL/TLS traffic to an affected device. A successful exploit could allow the attacker to cause an unexpected error in the hardware-based cryptography engine, which could cause the device to reload.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Cisco Adaptive Security Appliance Software — versions 9.16.4, 9.18.2, 9.18.2.5
- Cisco Adaptive Security Appliance (Asa) Software — versions 9.16.4, 9.18.2, 9.18.2.5
- Cisco Firepower Threat Defense Software — versions 7.2.1, 7.2.2, 7.2.3
- Cisco Firepower 2110
- Cisco Firepower 2120
- Cisco Firepower 2130
- Cisco Firepower 2140
- Cisco Firepower Threat Defense — versions 7.2.1, 7.2.2, 7.2.3
- Cisco Secure Firewall Threat Defense — versions 7.2.1, 7.2.2, 7.2.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-20006?
- CVE-2023-20006 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Incorrect Conversion between Numeric Types. CVSS score: 8.6/10. Published 2023-06-28.
- How severe is CVE-2023-20006?
- High severity. CVSS v3 base score is 8.6 out of 10.