Buffer overflow in Cisco Adaptive Security Appliance Software
CVE-2018-0231
A vulnerability in the Transport Layer Security (TLS) library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of the affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a malicious TLS message to an interface enabled for Secure Layer Socket (SSL) services on an affected device. Messages using SSL Version 3 (SSLv3) or SSL Version 2 (SSLv2) cannot be be used to exploit this vulnerability. An exploit could allow the attacker to cause a buffer underflow, triggering a crash on an affected device. This vulnerability affects Cisco ASA Software and Cisco FTD Software that is running on the following Cisco products: Adaptive Security Virtual Appliance (ASAv), Firepower Threat Defense Virtual (FTDv), Firepower 2100 Series Security Appliance. Cisco Bug IDs: CSCve18902, CSCve34335, CSCve38446.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.045 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: -0.001
Affected products
- Cisco Adaptive Security Appliance Software — versions 98.1\(1.154\), 9.8(1), 9.8\(1\)
- Cisco Firepower Threat Defense
- Cisco Secure Firewall Threat Defense
- Cisco Adaptive Security Appliance — versions Cisco Adaptive Security Appliance
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418… (Vendor Advisory)
- www.securitytracker.com/id/1040725 (VDB Entry, Third Party Advisory, vdb-entry)
- ics-cert.us-cert.gov/advisories/ICSA-18-184-01 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-0231?
- CVE-2018-0231 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2018-04-19.
- How severe is CVE-2018-0231?
- High severity. CVSS v3 base score is 8.6 out of 10.