Veille CVE

‹ Retour à la liste

CVE-2017-6627

7.5 Élevée Exploitée activement

Publiée le 07/09/2017 à 23:29 · Modifiée le 17/06/2026 à 03:22 · Analysée par le NVD · Source : psirt@cisco.com

Catalogue CISA KEV — Cisco IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service Vulnerability

Ajoutée le 03/03/2022 · Échéance de correction (agences US) : 24/03/2022

Action requise : Apply updates per vendor instructions.

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.

Traduire en français

Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 7.5 Élevée nvd@nist.gov (NVD) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1 7.5 Élevée 134c704f-9b21-4f2e-91b3-4a467353bcc0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0 5.0 Moyenne nvd@nist.gov (NVD) AV:N/AC:L/Au:N/C:N/I:N/A:P

Faiblesses (CWE)

Références

Ailleurs