What is the severity of CVE-2017-6731?

CVE-2017-6731 is considered a medium severity vulnerability that can lead to a denial of service condition.

How do I fix CVE-2017-6731?

To fix CVE-2017-6731, upgrade to the patched versions of Cisco IOS XR Software as recommended in the security advisory.

What is the impact of CVE-2017-6731?

CVE-2017-6731 can allow an unauthenticated remote attacker to reset the MSDP session, causing temporary service interruptions.

Which versions of Cisco IOS XR are affected by CVE-2017-6731?

CVE-2017-6731 affects Cisco IOS XR versions 4.3.2.mcast and 6.0.2.base.

Is authentication required to exploit CVE-2017-6731?

No, exploitation of CVE-2017-6731 does not require authentication, making it particularly concerning for vulnerable systems.

Vulnerability/
CVE-2017-6731

high

7.5

CWE

119

10/7/2017

5/8/2024

CVE-2017-6731: Buffer Overflow

First published: Mon Jul 10 2017(Updated: )

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.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XRv 9000	=4.3.2.mcast
Cisco IOS XRv 9000	=6.0.2.base

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Frequently Asked Questions

What is the severity of CVE-2017-6731?
CVE-2017-6731 is considered a medium severity vulnerability that can lead to a denial of service condition.
How do I fix CVE-2017-6731?
To fix CVE-2017-6731, upgrade to the patched versions of Cisco IOS XR Software as recommended in the security advisory.
What is the impact of CVE-2017-6731?
CVE-2017-6731 can allow an unauthenticated remote attacker to reset the MSDP session, causing temporary service interruptions.
Which versions of Cisco IOS XR are affected by CVE-2017-6731?
CVE-2017-6731 affects Cisco IOS XR versions 4.3.2.mcast and 6.0.2.base.
Is authentication required to exploit CVE-2017-6731?
No, exploitation of CVE-2017-6731 does not require authentication, making it particularly concerning for vulnerable systems.

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canonical/cisco ios xrv 9000
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version/cisco ios xrv 9000/6.0.2.base

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