CVE-2024-20359

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD): ASA and FTD Privilege Escalation

As of , CVE-2024-20359 in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 24 April 2024
US federal deadline
1 May 20247 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.19Higher than 97% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
No score that dayThe EPSS file of the day CISA listed it has no score for it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: sec.cloudapps.cisco.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a privilege escalation vulnerability that can allow local privilege escalation from Administrator to root.

CISA's 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.

The CVE record's description, from cisco

CVE published
24 April 2024
Assigned by
cisco
CVSS
6.0 Medium (CVSS 3.1, from the CNA)
CWE-94
Improper Control of Generation of Code ('Code Injection')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
partial

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD): other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2024-20353ASA and FTD Denial of ServiceCisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Patch this weekEPSS 0.710.71
CVE-2020-3259ASA and FTD Information DisclosureCisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Patch this weekRansomware use; EPSS 0.720.72
CVE-2020-3452ASA and FTD Read-Only Path TraversalCisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Patch this weekEPSS 0.990.99
CVE-2020-3580ASA and FTD Cross-Site Scripting (XSS)Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Patch this weekRansomware use; EPSS 0.860.86
CVE-2024-20481ASA and FTD Denial-of-ServiceCisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)Patch soon0.16

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