VDB-103393 · CVE-2017-6731 · OpenVAS 103403

Cisco IOS XR 4.3.2.MCAST/6.0.2.BASE MSDP memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS XR 4.3.2.MCAST/6.0.2.BASE and classified as problematic. This issue affects some unknown processing of the component MSDP Handler. This manipulation causes memory corruption. This vulnerability appears as CVE-2017-6731. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Cisco IOS XR 4.3.2.MCAST/6.0.2.BASE (Router Operating System). Affected by this vulnerability is an unknown part of the component MSDP Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

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.

The bug was discovered 07/05/2017. The weakness was presented 07/10/2017 as cisco-sa-20170705-iosxr as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2017-6731 since 03/09/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version 6.3.1.19i.MCAST, 6.2.3.1i.MCAST, 6.2.2.17i.MCAST or 6.1.4.12i.MCAST eliminates this vulnerability.

See VDB-103390 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XR Software Multicast Source Discovery Protocol Session Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IOS XR 6.3.1.19i.MCAST/6.2.3.1i.MCAST/6.2.2.17i.MCAST/6.1.4.12i.MCAST

Timelineinfo

03/09/2017 🔍
07/05/2017 +118 days 🔍
07/10/2017 +5 days 🔍
07/10/2017 +0 days 🔍
07/12/2017 +2 days 🔍
12/31/2020 +1268 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170705-iosxr
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6731 (🔍)
GCVE (CVE): GCVE-0-2017-6731
GCVE (VulDB): GCVE-100-103393
SecurityTracker: 1038820

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 07/12/2017 10:19
Updated: 12/31/2020 14:38
Changes: 07/12/2017 10:19 (66), 10/24/2019 16:55 (2), 12/31/2020 14:38 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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