SB2021042830 - Denial of service in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services
Published: April 28, 2021
Security Bulletin ID
SB2021042830
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-1493)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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/E:U/U:Green
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.
Remediation
Install update from vendor's website.