High severity · published Oct 23, 2024
CVE-2024-20339
Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to an issue that occurs when TLS traffic is processed. An attacker could exploit this vulnerability by sending certain TLS traffic over IPv4 through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition and impacting traffic to and through the affected device.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Cisco Firepower Threat Defense Software · Cisco
6.2.3; 6.2.3.9; 6.2.3.1; 6.2.3.2; 6.2.3.10; 6.4.0; +34 more · source: vendor
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; 6.4.0 through 6.4.0.17; 6.6.0 through 6.6.7.2; 6.7.0 through 6.7.0.3; 7.0.0 through 7.0.6.1; 7.1.0 through 7.1.0.3; +2 more · source: CISA
Affected product
CF
Cisco Firepower Threat Defense Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-20339
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-20339
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/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-dos-QXYE5Ufy
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300
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