7.5

CVE-2017-6627

Warning

A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version3.14.0s
Cisco ≫ Ios Xe Version3.14.1s
Cisco ≫ Ios Xe Version3.14.2s
Cisco ≫ Ios Xe Version3.14.3s
Cisco ≫ Ios Xe Version3.14.4s
Cisco ≫ Ios Xe Version3.15.0s
Cisco ≫ Ios Xe Version3.15.1cs
Cisco ≫ Ios Xe Version3.15.1s
Cisco ≫ Ios Xe Version3.15.2s
Cisco ≫ Ios Xe Version3.15.3s
Cisco ≫ Ios Xe Version3.15.4s
Cisco ≫ Ios Xe Version3.16.0cs
Cisco ≫ Ios Xe Version3.16.0s
Cisco ≫ Ios Xe Version3.16.1as
Cisco ≫ Ios Xe Version3.16.1s
Cisco ≫ Ios Xe Version3.16.2as
Cisco ≫ Ios Xe Version3.16.2bs
Cisco ≫ Ios Xe Version3.16.2s
Cisco ≫ Ios Xe Version3.16.3as
Cisco ≫ Ios Xe Version3.16.3s
Cisco ≫ Ios Xe Version3.16.4as
Cisco ≫ Ios Xe Version3.16.4bs
Cisco ≫ Ios Xe Version3.16.4ds
Cisco ≫ Ios Xe Version3.16.4s
Cisco ≫ Ios Xe Version3.16.5s
Cisco ≫ Ios Xe Version3.16.6s
Cisco ≫ Ios Xe Version3.17.0s
Cisco ≫ Ios Xe Version3.17.1as
Cisco ≫ Ios Xe Version3.17.1s
Cisco ≫ Ios Xe Version3.17.3s
Cisco ≫ Ios Xe Version3.18.0as
Cisco ≫ Ios Xe Version3.18.0s
Cisco ≫ Ios Xe Version3.18.1s
Cisco ≫ Ios Xe Version3.18.2s
Cisco ≫ Ios Xe Version3.18.3s
Cisco ≫ Ios Xe Version3.18.3vs

03.03.2022: CISA Known Exploited Vulnerabilities (KEV) Catalog

Cisco IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service Vulnerability

Vulnerability

A vulnerability in the UDP processing code of Cisco IOS and IOS XE could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and denial of service.

Description

Apply updates per vendor instructions.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 10.89% 0.927
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-404 Improper Resource Shutdown or Release

The product does not release or incorrectly releases a resource before it is made available for re-use.

http://www.securityfocus.com/bid/100644
Third Party Advisory
VDB Entry
http://www.securitytracker.com/id/1039289
Third Party Advisory
VDB Entry