SB2024042464 - Denial of service in Cisco Adaptive Security Appliance and Firepower Threat Defense Software Web Services
Published: April 24, 2024 Updated: April 25, 2024
Security Bulletin ID
SB2024042464
CSH Severity
High
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) Infinite loop (CVE-ID: CVE-2024-20353)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop when parsing HTTP headers. A remote attacker can send specially crafted HTTP request to the appliance and perform a denial of service (DoS) attack.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.