CVE-2018-0296: Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability
First published: Thu Jun 07 2018(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 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.
Credit: psirt@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance | >=9.1<9.1.7.29 | |
| Cisco Adaptive Security Appliance | >=9.2<9.2.4.33 | |
| Cisco Adaptive Security Appliance | >=9.3<9.4.4.18 | |
| Cisco Adaptive Security Appliance | >=9.5<9.6.4.8 | |
| Cisco Adaptive Security Appliance | >=9.8<9.8.2.28 | |
| Cisco Adaptive Security Appliance | >=9.9<9.9.2.1 | |
| Cisco Adaptive Security Appliance | =8.1\(2.5\) | |
| Cisco Adaptive Security Appliance | >=9.7<9.7.1.24 | |
| Cisco Firepower Threat Defense | >=6.0<6.1.0 | |
| Cisco Firepower Threat Defense | >=6.2.1<6.2.2.3 | |
| Cisco Firepower Threat Defense | =6.2.3 | |
| Cisco Firepower Threat Defense | =6.2.3-85.02 | |
| Cisco Firepower Threat Defense | =6.2.3-851 | |
| Cisco Firepower Threat Defense | =6.2.3.1 | |
| Cisco Adaptive Security Appliance Software | >=9.1<9.1.7.29 | |
| Cisco Adaptive Security Appliance Software | >=9.2<9.2.4.33 | |
| Cisco Adaptive Security Appliance Software | >=9.3<9.4.4.18 | |
| Cisco Adaptive Security Appliance Software | >=9.5<9.6.4.8 | |
| Cisco Adaptive Security Appliance Software | >=9.8<9.8.2.28 | |
| Cisco Adaptive Security Appliance Software | >=9.9<9.9.2.1 | |
| Cisco Adaptive Security Appliance Software | =8.1\(2.5\) | |
| Cisco Adaptive Security Appliance Software | >=9.7<9.7.1.24 | |
| Cisco Adaptive Security Appliance Software | ||
| >=9.1<9.1.7.29 | ||
| >=9.2<9.2.4.33 | ||
| >=9.3<9.4.4.18 | ||
| >=9.5<9.6.4.8 | ||
| >=9.8<9.8.2.28 | ||
| >=9.9<9.9.2.1 | ||
| =8.1\(2.5\) | ||
| >=9.7<9.7.1.24 | ||
| >=6.0<6.1.0 | ||
| >=6.2.1<6.2.2.3 | ||
| =6.2.3 | ||
| =6.2.3-85.02 | ||
| =6.2.3-851 | ||
| =6.2.3.1 |
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Reference Links
- http://packetstormsecurity.com/files/154017/Cisco-Adaptive-Security-Appliance-Path-Traversal.html
- http://www.securityfocus.com/bid/104612
- http://www.securitytracker.com/id/1041076
- 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.exploit-db.com/exploits/44956/
- https://nvd.nist.gov/vuln/detail/CVE-2018-0296
Frequently Asked Questions
What is the severity of CVE-2018-0296?
The severity of CVE-2018-0296 is classified as a denial of service vulnerability.
How do I fix CVE-2018-0296?
To fix CVE-2018-0296, upgrade to the recommended software releases provided by Cisco.
What devices are affected by CVE-2018-0296?
CVE-2018-0296 affects various versions of Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense software.
Can CVE-2018-0296 be exploited remotely?
Yes, CVE-2018-0296 can be exploited by an unauthenticated remote attacker.
What impact does CVE-2018-0296 have on the system?
The impact of CVE-2018-0296 is an unexpected reload of the affected device, leading to a denial of service condition.
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