Cisco ASR 9000 Series Aggregation Services Routers Critical Flaw Fixed

CISCO Routers
CISCO Routers

Critical flaw in Cisco ASR 9000 Series Aggregation Services Routers has fixed. Cisco says you need to update the patch immediately.

Cisco patched 29 new vulnerabilities and updates to address a critical flaw in ASR 9000 Series Aggregation Services Routers. It is high severity vulnerability according to Cisco.

A vulnerability in the sysadmin virtual machine (VM) on Cisco ASR 9000 Series Aggregation Services Routers running Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to access internal applications running on the sysadmin VM.

The vulnerability is due to incorrect isolation of the secondary management interface from internal sysadmin applications. An attacker could exploit this vulnerability by connecting to one of the listening internal applications. A successful exploit could result in unstable conditions, including both a denial of service and remote unauthenticated access to the device.

Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

This vulnerability affects Cisco ASR 9000 Series Aggregation Services Routers that are running an affected version of Cisco IOS XR 64-bit Software and have the secondary management interface (physically MGT LAN 1 on the route switch processor (RSP)) connected and configured. To determine if the secondary management interface is connected, log in to the sysadmin virtual machine and use the show interface command. If the secondary management interface is configured and connected, the device is vulnerable.

This vulnerability has been fixed in Cisco IOS XR 64-bit Software Release 6.5.3 and 7.0.1, which will edit the calvados_boostrap.cfg file and reload the device.

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