PT-2016-7326 · Cisco+3 · Ntp+4
Aanchal Malhotra
+1
·
Publicado
2016-11-23
·
Atualizado
2024-06-15
·
CVE-2016-7431
CVSS v3.1
5.3
Média
| Vetor | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
NTP versions prior to 4.2.8p9
Description
The issue allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. This is due to a regression of a previous issue. Multiple vulnerabilities could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or modify the time being advertised by a device acting as a Network Time Protocol (NTP) server. These vulnerabilities include issues with the Network Time Protocol Trap Service, Broadcast Mode, Insufficient Resource Pool, Configuration Modification, mrulist Query Requests, Multiple Binds to the Same Port, and Rate Limiting.
Recommendations
For NTP versions prior to 4.2.8p9, update to version 4.2.8p9 or later to resolve the issue. As a temporary workaround, consider restricting access to the NTP service to minimize the risk of exploitation. Additionally, workarounds may be available and are documented in the Cisco bug for each affected product.
Correção
DoS
RCE
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Cisco Nexus
Freebsd
Ntp
Suse
Ubuntu