CVE-2018-0296
Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability
Published Jun 7, 2018 · updated Aug 11, 2026 · cisco adaptive security appliance software
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using directory traversal techniques. The vulnerability is due to lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition or unauthenticated disclosure of information. This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.
Timeline
Detection, updates, and resolution for this record.
Jun 7, 2018 · Catalog
Detected
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
May 3, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Aug 11, 2026 · Catalog
Updated
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using
Required action
Apply updates per vendor instructions.
CISA due date May 3, 2022
Affected
- cpe cisco/adaptive security appliance softwareversion unspecified
- cpe cisco/firepower threat defense6.2.3-85.02
- vendor Cisco Adaptive Security Appliance (ASA)version unspecified
Sources
- CISA KEVCVE-2018-0296
Cisco Adaptive Security Appliance (ASA) contains an improper input validation vulnerability with HTTP URLs. Exploitation could allow an attacker to cause a denial-of-service (DoS) condition or information disclosure.
cisa.gov - CVE.orgCVE-2018-0296
Official CVE identifier
cve.org - FIRST EPSSCVE-2018-0296
30-day exploitation probability 99.9%
first.org - Exploit Database44956
Public archive entry. The exploit body is not stored here.
exploit-db.com - Exploit Database47220
Public archive entry. The exploit body is not stored here.
exploit-db.com - Metasploit Modulesauxiliary_scanner/http/cisco_directory_traversal
Public module reference (normal). Module source is not copied into this catalog.
rapid7.com - NIST NVDCVE-2018-0296
A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releas
nvd.nist.gov - Packet Storm Securityhttp://packetstormsecurity.com/files/154017/Cisco-Adaptive-Security-Appliance-Path-Traversal.html
Packet Storm link already published on the finding.
packetstormsecurity.com