Detections
Analytics
Cisco IOS XR Software BGP EVPN Operational Routes DoS (cisco-sa-20200122-ios-xr-routes)
medium Nessus Plugin ID 135407
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco IOS XR Software is affected by a denial of service (DoS) vulnerability in its Border Gateway Protocol (BGP) Ethernet VPN (EVPN) component due to insufficient validation of BGP updates messages which contain crafted EVPN attributes. An unauthenticated, remote attacker can exploit this issue, by sending specially crafted BGP updates messages to an affected device, to cause a DoS condition on the device.Please see the included Cisco BIDs and Cisco Security Advisory for more information
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr74902See Also
Plugin Details
Severity: Medium
ID: 135407
File Name: cisco-sa-20200122-ios-xr-routes.nasl
Version: 1.12
Type: combined
Family: CISCO
Published: 4/13/2020
Updated: 4/19/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2019-16018
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xr
Required KB Items: Host/Cisco/IOS-XR/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 1/22/2020
Vulnerability Publication Date: 1/22/2020
Reference Information
CVE: CVE-2019-16018