CVE-2017-6731

Name: CVE-2017-6731
Creator: NVD / NIST
Published: 2017-07-10T20:29:00.627+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.59%

Last modified Jun 17, 2026

CVE-2017-6731 is a vulnerability of currently unknown severity. A vulnerability in Multicast Source Discovery Protocol (MSDP) ingress packet processing for Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the MSDP session to be unexpectedly reset, causing a short denial of service (DoS) condition. The MSDP session will restart within a few seconds. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

Description

A vulnerability in Multicast Source Discovery Protocol (MSDP) ingress packet processing for Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the MSDP session to be unexpectedly reset, causing a short denial of service (DoS) condition. The MSDP session will restart within a few seconds. More Information: CSCvd94828. Known Affected Releases: 4.3.2.MCAST 6.0.2.BASE. Known Fixed Releases: 6.3.1.19i.MCAST 6.2.3.1i.MCAST 6.2.2.17i.MCAST 6.1.4.12i.MCAST.

Metrics

EPSS Probability

1.59%

72.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Cisco	Ios Xr	4.3.2.mcast
Cisco	Ios Xr	6.0.2.base

References

http://www.securitytracker.com/id/1038820Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170705-iosxrVendor Advisory
http://www.securitytracker.com/id/1038820Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170705-iosxrVendor Advisory

Timeline

Published: Jul 10, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6731?

How severe is CVE-2017-6731?

Severity scoring for CVE-2017-6731 is pending analysis. The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6731?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6731?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST