PT-2024-7501 · Cisco · Cisco Asa+2
Ilkin Gasimov
·
Published
2024-10-23
·
Updated
2025-08-01
·
CVE-2024-20494
CVSS v3.1
8.6
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions:
Cisco Adaptive Security Appliance (ASA) Software (affected versions not specified)
Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)
Description:
A vulnerability in the TLS cryptography functionality could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This issue is due to improper data validation during the TLS 1.3 handshake. An attacker could exploit this by sending a crafted TLS 1.3 packet to an affected system through a TLS 1.3-enabled listening socket, such as "/api/v1/login" or "/users/{id}", using vulnerable parameters like
username or password. The vulnerability can also impact the integrity of a device by causing VPN HostScan communication failures or file transfer failures when Cisco ASA Software is upgraded using Cisco Adaptive Security Device Manager (ASDM).Recommendations:
For Cisco Adaptive Security Appliance (ASA) Software, consider disabling the TLS 1.3 handshake functionality until a patch is available.
For Cisco Firepower Threat Defense (FTD) Software, restrict access to the TLS 1.3-enabled listening socket to minimize the risk of exploitation.
As a temporary workaround, consider disabling the
checkPassword() function or similar vulnerable functions until a patch is available.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.DoS
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Weakness Enumeration
Related Identifiers
Affected Products
Cisco Asa
Cisco Adaptive Security Device Manager
Cisco Ftd