September 2013 cisco ios software security advisory bundled publication

september 2013 cisco ios software security advisory bundled publication

The next Cisco IOS Software Security Advisory Bundled Publication is scheduled for September 25, Why don't you mark your calendars now. , Cisco IOS Software Security Advisory bundled publication all Cisco IOS Software vulnerabilities in the September bundled. The vulnerability occurs during the parsing of crafted DHCP packets. , Cisco IOS Software Security Advisory bundled publication. GENERATE PPK FILE WINSCP Сообщаю Для вас, что.

To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. A stand-alone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy, and may lack important information or contain factual errors. The information in this document is intended for end-users of Cisco products.

Advisory ID:. First Published:. Version 1. Base 7. A vulnerability in the implementation of the Network Time Protocol NTP feature in Cisco IOS Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service DoS condition. An attacker could exploit this vulnerability by sending multicast NTP packets to an affected device.

Repeated exploitation could result in a sustained DoS condition. Cisco has released software updates that address this vulnerability. A workaround is available to mitigate this vulnerability. The device is not vulnerable. Up 0 6? The processing of NTP multicast packets is not enabled by default.

No other Cisco products are currently known to be affected by this vulnerability. NTP is designed to time-synchronize a network of machines. Other Cisco devices do not have the show version command or may provide different output. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release.

If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center TAC or their contracted maintenance providers. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release column. Cisco recommends upgrading to the latest available release where possible.

The three vulnerabilities were discovered during troubleshooting of TAC customer service requests. To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

A stand-alone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy, and may lack important information or contain factual errors. The information in this document is intended for end-users of Cisco products. Advisory ID:. First Published:. Version 1.

Base 7. Determine whether NAT commands are included in the device configuration. The following example shows a device on which the NAT feature is active: Router show ip nat statistics Total translations: 2 0 static, 2 dynamic; 0 extended Outside interfaces: Serial0 Inside interfaces: Ethernet1 Hits: Misses: 5 Expired translations: 2 Dynamic mappings: -- Inside Source access-list 1 pool mypool refcount 2 pool mypool: netmask Two of the vulnerabilities are in the translation of DNS packets and one vulnerability is in the translation of Point-to-Point Tunneling Protocol packets.

None of the vulnerabilities require a three-way handshake.

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Last Updated:. Version 1. Base 7. Successful exploitation of this vulnerability may prevent traffic from transiting the affected interfaces. Cisco has released software updates that address this vulnerability.

There are no workarounds for this vulnerability. See the "Details" section below for information on affected versions. A device has an affected configuration if the following conditions are true: A tunnel interface is configured. Note: A Cisco Series router may be vulnerable even if the tunnels are not explicitly configured.

Tunnels may be configured by other features and these tunnels are also potentially affected. The tunnel mode is one of the following: a. IPIP - tunnel mode ipip c. Determining if your device is affected An interface queue wedge is a class of vulnerabilities in which certain packets are received and queued by a Cisco IOS router or switch, but due to a processing error, are never removed from the queue.

No other Cisco products are currently known to be affected by this vulnerability. Cisco IOS Software contains a queue wedge vulnerability that can be triggered when processing tunneled packets. The queue wedge may be triggered when processing ingress IP tunneled packets. Transit traffic does not cause this vulnerability to be triggered.

Successful exploitation of this vulnerability may result in an inability to pass traffic on affected interfaces. Releases First fixed in Release Vulnerable; First fixed in Release Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory. This vulnerability was found during troubleshooting of a customer issue. Cisco Security Vulnerability Policy. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method.

An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol SCP parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.

Fixed Software o Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license.

In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page , to determine exposure and a complete upgrade solution.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center TAC or their contracted maintenance providers.

Cisco has released the following SMUs to address this vulnerability. Customers who require SMUs for platforms or releases that are not listed are advised to contact their support organization. CSCvx 6. CSCvx 7. Source o This vulnerability was found during internal security testing. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy.

This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities.

There are no workarounds that address these vulnerabilities. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability.

In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities. The vulnerability is due to insufficient input validation of commands that are supplied by a user. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the prompt.

A successful exploit could allow the attacker to elevate privileges to root. This vulnerability is due to insufficient validation of command line arguments. An attacker could exploit this vulnerability by authenticating to an affected device and submitting crafted input to a specific command on the device. A successful exploit could allow the attacker to execute arbitrary commands as root. Fixed Software o Cisco has released free software updates that address the vulnerabilities described in this advisory.

Source o These vulnerabilities were found during internal security testing. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically crafted RTR packet to an affected device. A successful exploit could allow the attacker to cause a DoS condition because the BGP process could constantly restart and BGP routing could become unstable.

See the Details section in the bug ID s at the top of this advisory for the most complete and current information. If the rpki server command is displayed, as shown in the following example, the device could be vulnerable: iosxr show running-config router bgp. However, if the command returns output but none of the RPKI servers have a connection in ESTAB state, the device could become vulnerable if the connection becomes established.

However, administrators can remove the RPKI configuration as a mitigation. If RPKI servers are either not in use or removed from the configuration, the device is considered not vulnerable. The decision to remove the RPKI configuration needs careful consideration. While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions.

Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment. Fixed Software o When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page , to determine exposure and a complete upgrade solution.

This vulnerability is due to insufficient input validation of commands that are supplied by a user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to affected commands. A successful exploit could allow an attacker to gain access to the underlying root shell of the affected device and execute arbitrary commands as root.

The vulnerability exists because the affected software improperly sanitizes command arguments. An attacker could exploit this vulnerability by authenticating to the device and using CLI commands that contain crafted arguments. A successful exploit could allow the attacker to gain access to the underlying root shell of the affected device and execute arbitrary commands with root privileges.

This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device.

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