Actively exploited · Published Apr 24, 2024 · Assigned by cisco
CVE-2024-20359
Medium 6.0 Exploited
In plain English
A medium-severity code injection in Cisco Adaptive Security Appliance (ASA) Software from Cisco. Attackers are actively exploiting it in the wild (listed by CISA on April 24, 2024). The chance it is exploited in the next 30 days is estimated at 18.8% (higher than 97% of all known vulnerabilities). Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by May 1, 2024.
Official description
A vulnerability in a legacy capability that allowed for the preloading of VPN clients and plug-ins and that has been available in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary code with root-level privileges. Administrator-level privileges are required to exploit this vulnerability. This vulnerability is due to improper validation of a file when it is read from system flash memory. An attacker could exploit this vulnerability by copying a crafted file to the disk0: file system of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the affected device after the next reload of the device, which could alter system behavior. Because the injected code could persist across device reboots, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) Software | 9.8.19.8.1.59.8.1.79.8.29.8.2.89.8.2.149.8.2.159.8.2.17 |
| Cisco | Cisco Firepower Threat Defense Software | 6.2.36.2.3.16.2.3.26.2.3.36.2.3.46.2.3.56.2.3.66.2.3.7 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N