Cisco » IOS : Security Vulnerabilities, CVEs, CVSS score between 2 and 3.99

The debug-logging (aka debug cns) feature in Cisco Networking Services (CNS) for IOS 15.2(2)E3 allows local users to obtain sensitive information by reading an unspecified file, aka Bug ID CSCux18010.

The SSLVPN implementation in Cisco IOS 15.1 and 15.2, when DTLS is enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCty97961.

The SSLVPN implementation in Cisco IOS 12.4, 15.0, 15.1, and 15.2, when DTLS is not enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCte41827.

Cisco IOS 15.1 and 15.2, when a clientless SSL VPN is configured, allows remote authenticated users to cause a denial of service (device reload) by using a web browser to refresh the SSL VPN portal page, as demonstrated by the Android browser, aka Bug ID CSCtr86328.

Cisco IOS 12.4 and 15.0 through 15.2 allows physically proximate attackers to bypass the No Service Password-Recovery feature and read the start-up configuration via unspecified vectors, aka Bug ID CSCtr97640.

Unspecified vulnerability in Command EXEC in Cisco IOS allows local users to bypass command restrictions and obtain sensitive information via an unspecified "variation of an IOS command" involving "two different methods", aka CSCsk16129. NOTE: as of 20071016, the only disclosure is a vague pre-advisory with no actionable information. However, since it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes.

Cisco IOS 12.0, 12.1, and 12.2, when GRE IP tunneling is used and the RFC2784 compliance fixes are missing, does not verify the offset field of a GRE packet during decapsulation, which leads to an integer overflow that references data from incorrect memory locations, which allows remote attackers to inject crafted packets into the routing queue, possibly bypassing intended router ACLs.

Cross-site scripting (XSS) vulnerability in Cisco IOS Web Server for IOS 12.0(2a) allows remote attackers to inject arbitrary web script or HTML by (1) packets containing HTML that an administrator views via an HTTP interface to the contents of memory buffers, as demonstrated by the URI /level/15/exec/-/buffers/assigned/dump; or (2) sending the router Cisco Discovery Protocol (CDP) packets with HTML payload that an administrator views via the CDP status pages. NOTE: these vectors were originally reported as being associated with the dump and packet options in /level/15/exec/-/show/buffers.

Cisco IOS 12.0 through 12.4 and IOS XR before 3.2, with IPv6 enabled, allows remote attackers on a local network segment to cause a denial of service (device reload) and possibly execute arbitrary code via a crafted IPv6 packet.

Classic Cisco IOS 9.1 and later allows attackers with access to the login prompt to obtain portions of the command history of previous users, which may allow the attacker to access sensitive data.

The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command.

ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.