Vulnerability Monitor

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CVE-2017-6627

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.

Published

2017-09-07T21:29:00.660

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-399
  • Type: Primary
    CWE-404
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios 15.1\(2\)gc Yes
Operating System cisco ios 15.1\(2\)gc1 Yes
Operating System cisco ios 15.1\(2\)gc2 Yes
Operating System cisco ios 15.1\(4\)gc Yes
Operating System cisco ios 15.1\(4\)gc1 Yes
Operating System cisco ios 15.1\(4\)gc2 Yes
Operating System cisco ios 15.2\(1\)gc Yes
Operating System cisco ios 15.2\(1\)gc1 Yes
Operating System cisco ios 15.2\(1\)gc2 Yes
Operating System cisco ios 15.2\(2\)gc Yes
Operating System cisco ios 15.2\(3\)gc Yes
Operating System cisco ios 15.2\(3\)gc1 Yes
Operating System cisco ios 15.2\(3r\)gca Yes
Operating System cisco ios 15.2\(4\)gc Yes
Operating System cisco ios 15.2\(4\)gc1 Yes
Operating System cisco ios 15.2\(4\)gc2 Yes
Operating System cisco ios 15.2\(4\)gc3 Yes
Operating System cisco ios 15.4\(1\)t Yes
Operating System cisco ios 15.4\(1\)t1 Yes
Operating System cisco ios 15.4\(1\)t2 Yes
Operating System cisco ios 15.4\(1\)t3 Yes
Operating System cisco ios 15.4\(1\)t4 Yes
Operating System cisco ios 15.4\(2\)t Yes
Operating System cisco ios 15.4\(2\)t1 Yes
Operating System cisco ios 15.4\(2\)t2 Yes
Operating System cisco ios 15.4\(3\)m Yes
Operating System cisco ios 15.4\(3\)m1 Yes
Operating System cisco ios 15.4\(3\)m2 Yes
Operating System cisco ios 15.4\(3\)m2.2 Yes
Operating System cisco ios 15.4\(3\)m3 Yes
Operating System cisco ios 15.4\(3\)m4 Yes
Operating System cisco ios 15.4\(3\)m5 Yes
Operating System cisco ios 15.4\(3\)m6 Yes
Operating System cisco ios 15.4\(3\)m6a Yes
Operating System cisco ios 15.4\(3\)m7 Yes
Operating System cisco ios_xe 3.14.0s Yes
Operating System cisco ios_xe 3.14.1s Yes
Operating System cisco ios_xe 3.14.2s Yes
Operating System cisco ios_xe 3.14.3s Yes
Operating System cisco ios_xe 3.14.4s Yes
Operating System cisco ios_xe 3.15.0s Yes
Operating System cisco ios_xe 3.15.1cs Yes
Operating System cisco ios_xe 3.15.1s Yes
Operating System cisco ios_xe 3.15.2s Yes
Operating System cisco ios_xe 3.15.3s Yes
Operating System cisco ios_xe 3.15.4s Yes
Operating System cisco ios_xe 3.16.0cs Yes
Operating System cisco ios_xe 3.16.0s Yes
Operating System cisco ios_xe 3.16.1as Yes
Operating System cisco ios_xe 3.16.1s Yes
Operating System cisco ios_xe 3.16.2as Yes
Operating System cisco ios_xe 3.16.2bs Yes
Operating System cisco ios_xe 3.16.2s Yes
Operating System cisco ios_xe 3.16.3as Yes
Operating System cisco ios_xe 3.16.3s Yes
Operating System cisco ios_xe 3.16.4as Yes
Operating System cisco ios_xe 3.16.4bs Yes
Operating System cisco ios_xe 3.16.4ds Yes
Operating System cisco ios_xe 3.16.4s Yes
Operating System cisco ios_xe 3.16.5s Yes
Operating System cisco ios_xe 3.16.6s Yes
Operating System cisco ios_xe 3.17.0s Yes
Operating System cisco ios_xe 3.17.1as Yes
Operating System cisco ios_xe 3.17.1s Yes
Operating System cisco ios_xe 3.17.3s Yes
Operating System cisco ios_xe 3.18.0as Yes
Operating System cisco ios_xe 3.18.0s Yes
Operating System cisco ios_xe 3.18.1s Yes
Operating System cisco ios_xe 3.18.2s Yes
Operating System cisco ios_xe 3.18.3s Yes
Operating System cisco ios_xe 3.18.3vs Yes
References