Vulnslist

find the latest Cisco vulnerabilities

Cisco IOS XR Software Protocol Independent Multicast Denial of Service Vulnerability

cisco-sa-20190417-iosxr-pim-dos · Medium · Published · Updated

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XR Software 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. There are workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-iosxr-pim-dos

Cisco advisory ·CSAF JSON

Workarounds

In environments that do not require PIM rendezvous point mappings learned through Auto-RP, administrators can disable the feature with the auto-rp listen disable configuration command as shown in the following example:

router pim
address-family ipv4 auto-rp listen disable
After the configuration has been committed, a restart of the PIM process is required to disable the listening on UDP port 496. The PIM process can be restarted via the process restart pim location all CLI command.

CVEsCVE-2019-1712
Cisco Bug IDsCSCvg43676
CVSS ScoreBase 5.8
Base 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:X/RL:X/RC:X
Product Names From Source
Cisco IOS XR Software

CSAF Product Statuses

Product Status Source CVE Rows
Cisco IOS XR Software known_affected cisco_csaf CVE-2019-1712 1

Related Products

Product CVE Evidence
Cisco IOS XR Software CVE-2019-1712 Cisco OpenVuln
Cisco IOS CVE-2019-1712 Cisco OpenVuln
Cisco IOS Software CVE-2019-1712 Cisco OpenVuln