CVE-2020-27124: cisco adaptive_security_appliance_software Use of Uninitialized Variable

Vulnerability summary

CVE-2020-27124 is a high (CVSS 8.6) Use of Uninitialized Variable vulnerability in cisco adaptive_security_appliance_software. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 59.5% of scored vulnerabilities.

Timeline

1. 18-11-2024
   PublishedVulnerability first disclosed.
2. 18-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the SSL/TLS handler of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause the affected device to reload unexpectedly, leading to a denial of service (DoS) condition. The vulnerability is due to improper error handling on established SSL/TLS connections. An attacker could exploit this vulnerability by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection. A successful exploit could allow the attacker to cause the device to reload.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

• CWE-457Use of Uninitialized VariableThe code uses a variable that has not been initialized, leading to unpredictable or unintended results.