Cisco IOS XE 15.5(3)S/15.6(1)S memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE 15.5(3)S/15.6(1)S and classified as problematic. The affected element is an unknown function. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2017-3824. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cisco IOS XE 15.5(3)S/15.6(1)S (Router Operating System) and classified as problematic. This vulnerability affects an unknown code. 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. CVE summarizes:

A vulnerability in the handling of list headers in Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Cisco cBR-8 Converged Broadband Routers running vulnerable versions of Cisco IOS XE are affected. More Information: CSCux40637. Known Affected Releases: 15.5(3)S 15.6(1)S. Known Fixed Releases: 15.5(3)S2 15.6(1)S1 15.6(2)S 15.6(2)SP 16.4(1).

The bug was discovered 02/01/2017. The weakness was published 02/03/2017 with Cisco as CSCux40637 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2017-3824 since 12/21/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 15.5(3)S2, 15.6(1)S1, 15.6(2)S, 15.6(2)SP or 16.4(1) eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 95937†) and SecurityTracker (ID 1037774†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

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

NVD Base Score: 6.8
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 cBR Series Converged Broadband Routers List Headers 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 XE 15.5(3)S2/15.6(1)S1/15.6(2)S/15.6(2)SP/16.4(1)

Timelineinfo

12/21/2016 🔍
02/01/2017 +42 days 🔍
02/01/2017 +0 days 🔍
02/03/2017 +2 days 🔍
02/03/2017 +0 days 🔍
02/03/2017 +0 days 🔍
02/03/2017 +0 days 🔍
02/06/2020 +1098 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCux40637
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3824 (🔍)
GCVE (CVE): GCVE-0-2017-3824
GCVE (VulDB): GCVE-100-96520

OVAL: 🔍

SecurityFocus: 95937 - Cisco cBR Series Converged Broadband Routers CVE-2017-3824 Denial of Service Vulnerability
SecurityTracker: 1037774

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

Entryinfo

Created: 02/03/2017 17:01
Updated: 02/06/2020 21:59
Changes: 02/03/2017 17:01 (71), 02/06/2020 21:59 (6)
Complete: 🔍
Cache ID: 216::103

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