Strix
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CVE-2024-20359

MEDIUMCVSS 6/10Actively ExploitedEPSS 16.99%

Last modified

CVE-2024-20359 is a medium-severity vulnerability rated 6/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 16.99% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
16.99%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software9.8.1
CiscoAdaptive Security Appliance Software9.8.1.5
CiscoAdaptive Security Appliance Software9.8.1.7
CiscoAdaptive Security Appliance Software9.8.2
CiscoAdaptive Security Appliance Software9.8.2.8
CiscoAdaptive Security Appliance Software9.8.2.14
CiscoAdaptive Security Appliance Software9.8.2.15
CiscoAdaptive Security Appliance Software9.8.2.17
CiscoAdaptive Security Appliance Software9.8.2.20
CiscoAdaptive Security Appliance Software9.8.2.24
CiscoAdaptive Security Appliance Software9.8.2.26
CiscoAdaptive Security Appliance Software9.8.2.28
CiscoAdaptive Security Appliance Software9.8.2.33
CiscoAdaptive Security Appliance Software9.8.2.35
CiscoAdaptive Security Appliance Software9.8.2.38
CiscoAdaptive Security Appliance Software9.8.3
CiscoAdaptive Security Appliance Software9.8.3.8
CiscoAdaptive Security Appliance Software9.8.3.11
CiscoAdaptive Security Appliance Software9.8.3.14
CiscoAdaptive Security Appliance Software9.8.3.16
CiscoAdaptive Security Appliance Software9.8.3.18
CiscoAdaptive Security Appliance Software9.8.3.21
CiscoAdaptive Security Appliance Software9.8.3.26
CiscoAdaptive Security Appliance Software9.8.3.29
CiscoAdaptive Security Appliance Software9.8.4
CiscoAdaptive Security Appliance Software9.8.4.3
CiscoAdaptive Security Appliance Software9.8.4.7
CiscoAdaptive Security Appliance Software9.8.4.8
CiscoAdaptive Security Appliance Software9.8.4.10
CiscoAdaptive Security Appliance Software9.8.4.12
CiscoAdaptive Security Appliance Software9.8.4.15
CiscoAdaptive Security Appliance Software9.8.4.17
CiscoAdaptive Security Appliance Software9.8.4.20
CiscoAdaptive Security Appliance Software9.8.4.22
CiscoAdaptive Security Appliance Software9.8.4.25
CiscoAdaptive Security Appliance Software9.8.4.26
CiscoAdaptive Security Appliance Software9.8.4.29
CiscoAdaptive Security Appliance Software9.8.4.32
CiscoAdaptive Security Appliance Software9.8.4.33
CiscoAdaptive Security Appliance Software9.8.4.34
CiscoAdaptive Security Appliance Software9.8.4.35
CiscoAdaptive Security Appliance Software9.8.4.39
CiscoAdaptive Security Appliance Software9.8.4.40
CiscoAdaptive Security Appliance Software9.8.4.41
CiscoAdaptive Security Appliance Software9.8.4.43
CiscoAdaptive Security Appliance Software9.8.4.44
CiscoAdaptive Security Appliance Software9.8.4.45
CiscoAdaptive Security Appliance Software9.8.4.46
CiscoAdaptive Security Appliance Software9.8.4.48
CiscoAdaptive Security Appliance Software9.12.1

Showing 50 of 267 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20359?
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.
How severe is CVE-2024-20359?
CVE-2024-20359 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 16.99% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2024-20359?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20359?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST