CVE-2024-20359: Cisco ASA and FTD Privilege Escalation Vulnerability

CVE-2024-20359 · Severity: critical · CVSS 6 · Exploited in the wild · Published 2024-04-24

A vulnerability in Cisco ASA and FTD software allows an authenticated, local attacker with Administrator privileges to execute arbitrary code with root-level privileges. The flaw exists in a legacy capability for preloading VPN clients and plug-ins due to improper validation of files read from system flash memory. Exploitation involves copying a crafted file to the disk0: file system, which executes upon the next device reload and can persist across reboots.

Technologies: Cisco Adaptive Security Appliance (ASA), Cisco Firepower Threat Defense (FTD). Vendors: Cisco.

Quick answers

Is CVE-2024-20359 exploited in the wild?
Yes. CVE-2024-20359 is known to be exploited in the wild, first recorded on 24 April 2024. Treat it as urgent.
How severe is CVE-2024-20359?
Critical severity, with a CVSS score of 6, published 24 April 2024.
Which products and versions are affected?
Cisco Adaptive Security Appliance (ASA) Software; Cisco Firepower Threat Defense (FTD) Software.
Is there a fix for CVE-2024-20359?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2024-20359 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2024-20359?
Check whether you run Cisco Adaptive Security Appliance (ASA) or Cisco Firepower Threat Defense (FTD). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Cisco Adaptive Security Appliance (ASA) Software
  • Cisco Firepower Threat Defense (FTD) Software

Timeline

  • 2024-04-24: disclosed
  • 2024-04-24: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2024-04-24: exploited: Reported as exploited in the wild in association with the ArcaneDoor campaign.

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