A vulnerability in the TCP normalizer of Cisco Adaptive Security Appliance (ASA) Software (8.0 through 8.7 and 9.0 through 9.6) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause Cisco ASA and FTD to drop any further incoming traffic on all interfaces, resulting in a denial of service (DoS) condition. The vulnerability is due to improper limitation of the global out-of-order TCP queue for specific block sizes. An attacker could exploit this vulnerability by sending a large number of unique permitted TCP connections with out-of-order segments. An exploit could allow the attacker to exhaust available blocks in the global out-of-order TCP queue, causing the dropping of any further incoming traffic on all interfaces and resulting in a DoS condition. Cisco Bug IDs: CSCvb46321.
The phone-proxy implementation in Cisco Adaptive Security Appliance (ASA) Software 9.0.3.6 and earlier does not properly validate X.509 certificates, which allows remote attackers to cause a denial of service (connection-database corruption) via an invalid entry, aka Bug ID CSCui33299.
Memory leak on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.4 allows remote authenticated users to cause a denial of service (memory consumption and blank response page) by using the clientless WebVPN feature, aka Bug ID CSCth34278.
The IPv6 implementation in Cisco Adaptive Security Appliance (ASA) Software 9.1.3 and earlier, when NAT64 or NAT66 is enabled, does not properly process NAT rules, which allows remote attackers to cause a denial of service (device reload) via crafted packets, aka Bug ID CSCue34342.
The NAT process on Cisco Adaptive Security Appliances (ASA) devices allows remote attackers to cause a denial of service (connections-table memory consumption) via crafted packets, aka Bug ID CSCue46386.
The platform-sw component on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 before 8.2(5.3), 8.3 before 8.3(2.20), and 8.4 before 8.4(2.1) does not properly handle non-ASCII characters in an interface description, which allows local users to cause a denial of service (reload without configuration) via a crafted description, aka Bug ID CSCtq50523.
Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) allow remote attackers to cause a denial of service (ASDM syslog outage) via a long URL, aka Bug IDs CSCsm11264 and CSCtb92911.
Eval injection vulnerability in the cscowrapjs function in /+CSCOL+/cte.js in WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 allows remote attackers to bypass a DOM wrapper and conduct cross-site scripting (XSS) attacks by setting CSCOWebVPN['process'] to the name of a crafted function, aka Bug ID CSCsy80694.
WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 allows remote attackers to bypass certain protection mechanisms involving URL rewriting and HTML rewriting, and conduct cross-site scripting (XSS) attacks, by modifying the first hex-encoded character in a /+CSCO+ URI, aka Bug ID CSCsy80705.
WebVPN on the Cisco Adaptive Security Appliances (ASA) device with software 8.0(4), 8.1.2, and 8.2.1 does not properly distinguish its own login screen from the login screens it produces for third-party (1) FTP and (2) CIFS servers, which makes it easier for remote attackers to trick a user into sending WebVPN credentials to an arbitrary server via a URL associated with that server, aka Bug ID CSCsy80709.
The Mobile User Security (MUS) service on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.3(2) does not properly authenticate HTTP requests from a Web Security appliance (WSA), which might allow remote attackers to obtain sensitive information via a HEAD request, aka Bug ID CSCte53635.
emWEB on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) allows remote attackers to cause a denial of service (daemon crash) via a request for a document whose name contains space characters, aka Bug ID CSCsy08416.
Unspecified vulnerability on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) allows remote authenticated users to cause a denial of service (device crash) via a high volume of IPsec traffic, aka Bug ID CSCsx52748.
CRLF injection vulnerability in /+CSCOE+/logon.html on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 through 8.4 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors, aka Bug ID CSCth63101.
Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.2 through 8.4 process IKE requests despite a vpnclient mode configuration, which allows remote attackers to obtain potentially sensitive information by reading IKE responder traffic, aka Bug ID CSCtt07749.
Cisco Adaptive Security Appliances (ASA) devices with firmware 8.x through 8.4(1) do not properly manage SSH sessions, which allows remote authenticated users to cause a denial of service (device crash) by establishing multiple sessions, aka Bug ID CSCtc59462.
Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.2 through 8.4 do not properly perform proxy authentication during attempts to cut through a firewall, which allows remote attackers to obtain sensitive information via a connection attempt, aka Bug ID CSCtx42746.
The Clientless SSL VPN portal customization framework in Cisco ASA Software 8.2 before 8.2(5.51), 8.3 before 8.3(2.42), 8.4 before 8.4(7.23), 8.6 before 8.6(1.14), 9.0 before 9.0(4.24), 9.1 before 9.1(5.12), and 9.2 before 9.2(2.4) does not properly implement authentication, which allows remote attackers to modify RAMFS customization objects via unspecified vectors, as demonstrated by inserting XSS sequences or capturing credentials, aka Bug ID CSCup36829.
Untrusted search path vulnerability in Cisco ASA Software 8.x before 8.4(3), 8.5, and 8.7 before 8.7(1.13) allows local users to gain privileges by placing a Trojan horse library file in external memory, leading to library use after device reload because of an incorrect LDLIBRARYPATH value, aka Bug ID CSCtq52661.
The Smart Call Home (SCH) implementation in Cisco ASA Software 8.2 before 8.2(5.50), 8.4 before 8.4(7.15), 8.6 before 8.6(1.14), 8.7 before 8.7(1.13), 9.0 before 9.0(4.8), and 9.1 before 9.1(5.1) allows remote attackers to bypass certificate validation via an arbitrary VeriSign certificate, aka Bug ID CSCun10916.
Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. The attacker could exploit this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause the targeted router to flush its routing table and propagate the crafted OSPF LSA type 1 update throughout the OSPF AS domain. To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast OSPF LSA type 1 packets. No other LSA type packets can trigger this vulnerability. OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability. Cisco Bug IDs: CSCva74756, CSCve47393, CSCve47401.