Buffer overflow in Cisco Adaptive Security Appliance (ASA) - CVE-2021-1493
Published: April 28, 2021
Vulnerability identifier: #VU52714
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1493
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the web services interface of Cisco Adaptive Security Appliance (ASA)
Software and Cisco Firepower Threat Defense (FTD) Software. A remote authenticated user can send a specially crafted HTTP request to the system, trigger buffer overflow and crash the service.
Affected software
Cisco Adaptive Security Appliance (ASA)
How to mitigate CVE-2021-1493
Install updates from vendor's website.
Cisco Adaptive Security Appliance (ASA) - addressed in versions 9.12.4.13, 9.14.2.8, 9.15.1.7, 9.15.1.10