The XML parser in Cisco Adaptive Security Appliance (ASA) Software 8.4 before 8.4(7.28), 8.6 before 8.6(1.17), 9.0 before 9.0(4.33), 9.1 before 9.1(6), 9.2 before 9.2(3.4), and 9.3 before 9.3(3), when Clientless SSL VPN, AnyConnect SSL VPN, or AnyConnect IKEv2 VPN is used, allows remote attackers to cause a denial of service (VPN outage or device reload) via a crafted XML document, aka Bug ID CSCus95290.

The remote Cisco Adaptive Security Appliance (ASA) is missing a vendor-supplied security patch and is therefore affected by the following vulnerabilities :

  - A flaw exists in the failover ipsec feature due to not     properly handling failover communication messages. An     unauthenticated attacker, sending crafted UDP packets     over the local network to the failover interface, can     reconfigure the failover units to gain full control.
    (CVE-2015-0675)

  - A flaw exists when handling DNS reply packets, which a     man-in-the-middle attacker, by triggering outbound DNS     queries and then sending crafted responses to these, can     exploit to consume excessive memory, leading to a denial     of service. (CVE-2015-0676)

  - A flaw exists in the XML Parser configuration when     handling specially crafted XML messages, which a remote,     unauthenticated attacker can use to crash the WebVPN     component, resulting in a denial of service condition.
    (CVE-2015-0677)

Detections

Analytics

CVE-2015-0677

high

Tenable Plugins

high