Medium severity · published Oct 23, 2024
CVE-2024-20299
Cisco Adaptive Security Appliance and Firepower Threat Defense AnyConnect Access Control List Bypass Vulnerability
5.8
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability in the AnyConnect firewall for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should have been denied to flow through an affected device. This vulnerability is due to a logic error in populating group ACLs when an AnyConnect client establishes a new session toward an affected device. An attacker could exploit this vulnerability by establishing an AnyConnect connection to the affected device. A successful exploit could allow the attacker to bypass configured ACL rules.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Cisco Adaptive Security Appliance (ASA) Software · Cisco
9.12.3; 9.8.3; 9.12.1; 9.8.1; 9.12.2; 9.8.2.45; +34 more · source: vendor
CF
Cisco Firepower Threat Defense Software · Cisco
6.2.3.14; 6.4.0.1; 6.2.3.7; 6.2.3; 6.4.0.2; 6.2.3.9; +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, CISA
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 6.7.0.3; 7.0.0 through 7.3.1.2 · source: CISA
Affected product
CA
Cisco Adaptive Security Appliance (ASA) Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-20299
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-20299
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-acl-bypass-VvnLNKqf
Broken Link
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300
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