CVE-2018-0296
Cisco Adaptive Security Appliance (ASA) Denial-of-Service
- Published7 Jun 2018
- Added to CISA KEV3 Nov 2021
- Remediation due3 May 2022
Description
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HAffected products
Remediation
References
- http://packetstormsecurity.com/files/154017/Cisco-Adaptive-Security-Appliance-Path-Traversal.html
- https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-asaftd
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0296
- https://www.exploit-db.com/exploits/44956/
- http://www.securityfocus.com/bid/104612
- http://www.securitytracker.com/id/1041076
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2018-0296 being actively exploited?
Yes. CVE-2018-0296 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.
How severe is CVE-2018-0296?
CVE-2018-0296 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 99.9% probability of exploitation.
Which products are affected by CVE-2018-0296?
Affected products include Cisco Firepower Threat Defense, Cisco Secure Firewall Threat Defense, Cisco Adaptive Security Appliance Software.
How do I fix CVE-2018-0296?
Upgrade affected software to a fixed version, for example Cisco Secure Firewall Threat Defense 6.1.0, Cisco Adaptive Security Appliance Software 9.1.7.29 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2018-0296 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.