CVE-2018-0101
CriticalCVSS 10.0Exploitation Probability (EPSS)
Very high risk100th percentile - higher than 100% of all known CVEs
Summary
A vulnerability in the SSL VPN functionality of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The issue is due to a double-free memory condition when the webvpn feature is enabled. An attacker could exploit this by sending multiple crafted XML packets to a webvpn-configured interface.
Risk Assessment
Successful exploitation could allow the attacker to execute arbitrary code and gain full control of the system, or cause a reload, potentially leading to service disruption.
Recommendation
Apply the patches provided by Cisco for affected ASA software versions immediately and monitor Cisco security advisories.
Other vulnerabilities in Cisco ASA Software
See all- CVE-2016-6432High
A vulnerability in the Identity Firewall feature of Cisco ASA Software before version 9.6(2.1) could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The issue is due to a buffer overflow in the affected code area.
- CVE-2016-6431High
A vulnerability in the local Certificate Authority (CA) feature of Cisco ASA Software before version 9.6(1.5) could allow an unauthenticated, remote attacker to cause a reload of the affected system. The issue is due to improper handling of crafted packets during the enrollment operation.
- CVE-2014-3392High
The Clientless SSL VPN portal in Cisco ASA Software before version 8.2(5.51), 8.3(2.42), 8.4(7.23), 8.6(1.15), 9.0(4.24), 9.1(5.12), 9.2(2.8), and 9.3(1.1) allows remote attackers to obtain sensitive information from process memory or modify memory contents via crafted parameters.
- CVE-2014-3389High
The VPN implementation in Cisco ASA Software versions before 7.2(5.15), 8.2(5.51), 8.3(2.42), 8.4(7.23), 8.6(1.15), 9.0(4.24), 9.1(5.12), 9.2(2.6), and 9.3(1.1) does not properly implement a tunnel filter, allowing remote authenticated users to gain failover-unit access via crafted packets.
- CVE-2014-3388High
The DNS inspection engine in Cisco ASA Software 9.0 before 9.0(4.13), 9.1 before 9.1(5.7), and 9.2 before 9.2(2) allows remote attackers to cause a denial of service (device reload) via crafted DNS packets.
- CVE-2014-3387High
The SunRPC inspection engine in Cisco ASA Software before versions 7.2(5.14), 8.2(5.51), 8.3(2.42), 8.4(7.23), 8.5(1.21), 8.6(1.14), 8.7(1.13), 9.0(4.5), and 9.1(5.3) allows remote attackers to cause a denial of service (device reload) via crafted SunRPC packets.
- CVE-2014-3386High
The GPRS Tunneling Protocol (GTP) inspection engine in Cisco ASA Software before version 8.2(5.51), 8.4(7.15), 8.7(1.13), 9.0(4.8), and 9.1(5.1) allows remote attackers to cause a denial of service (device reload) via a crafted series of GTP packets.
- CVE-2014-3385High
A race condition in the Health and Performance Monitoring (HPM) for ASDM feature in Cisco ASA allows remote attackers to cause a denial of service by generating many half-open TCP connections simultaneously.
- CVE-2014-3384High
The IKEv2 implementation in Cisco ASA Software before versions 8.4(7.15), 8.6(1.14), 9.0(4.8), and 9.1(5.1) allows remote attackers to cause a denial of service by sending a crafted packet during tunnel creation.
- CVE-2014-3383High
The IKE implementation in the VPN component in Cisco ASA Software 9.1 before 9.1(5.1) allows remote attackers to cause a denial of service (device reload) via crafted UDP packets.
Original NVD description (English source)
A vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to an attempt to double free a region of memory when the webvpn feature is enabled on the Cisco ASA device. An attacker could exploit this vulnerability by sending multiple, crafted XML packets to a webvpn-configured interface on the affected system. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system, or cause a reload of the affected device. This vulnerability affects Cisco ASA Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), 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, ASA 1000V Cloud Firewall, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4110 Security Appliance, Firepower 9300 ASA Security Module, Firepower Threat Defense Software (FTD). Cisco Bug IDs: CSCvg35618.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS