What’s Vulnerable › Vulnerabilities
CVE-2024-20359: Cisco ASA and FTD Privilege Escalation Vulnerability
- Severity: medium (CVSS 6.0 v3.1)
- Exploited in the wild: yes — in CISA KEV since 2024-04-24
- EPSS: 18.8% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2024-04-24 · updated 2026-08-11
- Weakness: CWE-94
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.
Summary
CVE-2024-20359 is a privilege escalation flaw in Cisco ASA and FTD Software that lets an authenticated local attacker with administrator-level privileges execute arbitrary code as root by copying a crafted file to the device's disk0: file system. The injected code can persist across reboots, altering system behavior. The vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog with active exploitation, and a public exploit or detection template exists. Apply mitigations per Cisco's instructions or discontinue use if mitigations are unavailable.
CVE-2024-20359 هو ثغرة تصعيد امتيازات في برامج Cisco ASA وFTD تسمح لمهاجم محلي مصادق عليه يمتلك امتيازات مسؤول بتنفيذ تعليمات برمجية عشوائية بصلاحيات الجذر عبر نسخ ملف مصمم خصيصًا إلى نظام الملفات disk0: في الجهاز. يمكن للتعليمات البرمجية المحقونة أن تستمر عبر عمليات إعادة التشغيل مما يغير سلوك النظام. الثغرة مدرجة في كتالوج CISA للثغرات المعروفة المستغلة مع استغلال نشط، ويوجد استغلال عام أو قالب كشف. طبق التخفيفات وفقًا لتعليمات Cisco أو أوقف استخدام المنتج إذا لم تكن التخفيفات متاحة.
Affected products
- Cisco ASA Software: 9.8.1, 9.8.1.5, 9.8.1.7, 9.8.2, 9.8.2.8, 9.8.2.14 (+181)
- Cisco Firepower Threat Defense Software: 6.2.3, 6.2.3.1, 6.2.3.2, 6.2.3.3, 6.2.3.4, 6.2.3.5 (+74)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-persist-rce-FLsNXF4h
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-persist-rce-FLsNXF4h
- https://blog.talosintelligence.com/arcanedoor-new-espionage-focused-campaign-found-targeting-perimeter-network-devices/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-20359
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