A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCisco Adaptive Security Appliance Software
OSCisco9.6 – 9.6.4.42 (excl.)9.8 – 9.8.4.20 (excl.)9.9 – 9.9.2.74 (excl.)9.10 – 9.10.1.42 (excl.)9.12 – 9.12.3.12 (excl.)9.13 – 9.13.1.10 (excl.)9.14 – 9.14.1.10 (excl.)Cisco Asa 5505
HWCiscoall versionsCisco Asa 5510
HWCiscoall versionsCisco Asa 5512 X
HWCiscoall versionsCisco Asa 5515 X
HWCiscoall versionsCisco Asa 5520
HWCiscoall versionsCisco Asa 5525 X
HWCiscoall versionsCisco Asa 5540
HWCiscoall versionsCisco Asa 5545 X
HWCiscoall versionsCisco Asa 5550
HWCiscoall versionsCisco Asa 5555 X
HWCiscoall versionsCisco Asa 5580
HWCiscoall versionsCisco Asa 5585 X
HWCiscoall versionsCisco Secure Firewall Threat Defense
APPCisco6.2.3 – 6.2.3.16 (excl.)6.3.0 – 6.3.0.6 (excl.)6.4.0 – 6.4.0.10 (excl.)6.5.0 – 6.5.0.5 (excl.)6.6.0 – 6.6.0.1 (excl.)
CISA KEV — detailsi
- Vendori
- Cisco ↗
- Producti
- Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
- Added to KEVi
- November 3, 2021
- Remediation deadline (US Federal)i
- May 3, 2022(overdue)
Apply updates per vendor instructions.
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.
Related vulnerabilities
RCE jako root w Cisco ASA i FTD poprzez podatny serwer VPN web
RCE w web services Cisco ASA, FTD, IOS, IOS XE, IOS XR przez HTTP
Cisco FTD: statyczne konta z zakodowanymi hasłami umożliwiają nieautoryzowany dostęp
RCE w podsystemie SSH Cisco ASA — wykonanie poleceń jako root
Cisco ASA – brak walidacji autentyczności obrazu ASDM umożliwia RCE