PT-2019-2126 · Cisco · Cisco Ios Xr
Publicado
2019-04-17
·
Atualizado
2019-10-09
·
CVE-2019-1712
CVSS v3.1
7.5
Alta
| Vetor | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Cisco IOS XR Software versions prior to 6.2.3, 6.3.2, 6.4.0, and 6.5.1
Description
A vulnerability in the Protocol Independent Multicast (PIM) feature could allow an unauthenticated, remote attacker to cause the PIM process to restart, resulting in a denial of service condition on an affected device. The vulnerability is due to the incorrect processing of crafted AutoRP packets. An attacker could exploit this vulnerability by sending crafted packets to port UDP 496 on a reachable IP address on the device. A successful exploit could allow the attacker to cause the PIM process to restart.
Recommendations
For versions prior to 6.2.3, update to version 6.2.3 or later.
For versions prior to 6.3.2, update to version 6.3.2 or later.
For versions prior to 6.4.0, update to version 6.4.0 or later.
For versions prior to 6.5.1, update to version 6.5.1 or later.
As a temporary workaround, consider restricting access to port UDP 496 to minimize the risk of exploitation.
Correção
DoS
RCE
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Cisco Ios Xr