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CVE-2017-6627

Published: Sep 7, 2017Updated: Apr 22, 2026 Sources: CVE List NVD BDUCWE-399
7.5HIGH
NVD MITRE
EPSS Score
6.0%
Top 7.1%
CISA KEV
Active Exploitation
Since Mar 3, 2022
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-399CWE-404

Affected Products

Cisco Systems Inc.
commercial·USaka cisco, cisco systems
Cisco IOSOn-premFirmware
Networking Infrastructure / router-switch
Cisco IOS XEOn-premFirmware
Networking Infrastructure / router-switch
and 3 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Mar 3, 2022
Remediation due:Mar 24, 2022

Required action: Apply updates per vendor instructions.

Official Patch Available
Workaround Available
Is your org exposed to CVE-2017-6627?We can run the check for you — a free external exposure review, no install. Check my exposure

References

http://www.securityfocus.com/bid/100644
securityfocus.com
http://www.securitytracker.com/id/1039289
securitytracker.com
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170906-ios-udp
tools.cisco.com
and 2 more references View all →

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