High severity · published Apr 24, 2024
CVE-2024-20353
Cisco ASA and FTD Denial of Service Vulnerability
In wildKEV
8.6
CVSS
69.8%
EPSS
Yes
On KEV
Description
A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)69.8% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Apr 24, 2024
Federal remediation dueMay 1, 2024
Ransomware campaign useNot known
Affected products
Which versions
AS
Adaptive Security Appliance · Cisco
9.8.1 through 9.8.4.48; 9.12.1 through 9.12.4.65; 9.14.1 before 9.14.4.23; 9.15.1 through 9.15.1.21; 9.16.1 through 9.16.4.55; 9.17.1 through 9.17.1.33; +3 more · source: CISA
CA
Cisco Adaptive Security Appliance (ASA) Software · Cisco
9.8.1; 9.8.1.5; 9.8.1.7; 9.8.2; 9.8.2.8; 9.8.2.14; +34 more · source: vendor
CF
Cisco Firepower Threat Defense Software · Cisco
6.2.3; 6.2.3.1; 6.2.3.2; 6.2.3.3; 6.2.3.4; 6.2.3.5; +34 more · source: vendor
AS
Adaptive Security Appliance Software · Cisco
9.8.1; 9.8.1.5; 9.8.1.7; 9.8.2; 9.8.2.8; 9.8.2.14; +34 more · source: NVD
SF
Secure Firewall Threat Defense · Cisco
6.2.3; 6.2.3.1; 6.2.3.2; 6.2.3.3; 6.2.3.4; 6.2.3.5; +34 more · source: NVD
FT
Firepower Threat Defense Software · Cisco
6.2.3 through 6.2.3.18; 6.6.0 through 6.6.7.1; 6.4.0 through 6.4.0.17; 6.7.0 through 6.7.0.3; 7.0.0 through 7.0.6; 7.1.0 through 7.1.0.3; +3 more · source: CISA
AS
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) · Cisco
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-20353
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-20353
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2
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