Detections
Analytics
Cisco IOS XE TL1 Request Handling RCE (cisco-sa-20161102-tl1)
critical Nessus Plugin ID 94680
Language:
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version and model, the Cisco IOS XE software running on the remote ASR device is affected by a remote code execution vulnerability in the Transaction Language 1 (TL1) code due to an overflow condition caused by improper bounds checking on certain input when handling TL1 requests. An unauthenticated, remote attacker can exploit this, via a specially crafted request to the TL1 port, to cause a denial of service condition or the execution of arbitrary code.Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCuy15175. Alternatively, as a mitigation, deploy infrastructure access control lists (iACLs) to prevent TL1 packets from reaching the device.See Also
Plugin Details
Severity: Critical
ID: 94680
File Name: cisco-sa-20161102-tl1.nasl
Version: 1.6
Type: local
Family: CISCO
Published: 11/10/2016
Updated: 5/8/2020
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Host/Cisco/IOS-XE/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 11/2/2016
Vulnerability Publication Date: 11/2/2016
Reference Information
CVE: CVE-2016-6441
BID: 94072