VDB-101423 · CVE-2017-3882 · BID 98287

Cisco CVR100W up to 1.0.1 UPnP memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco CVR100W up to 1.0.1. It has been rated as critical. This vulnerability affects unknown code of the component UPnP. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2017-3882. The attack must be carried out from within the local network. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco CVR100W up to 1.0.1. This issue affects an unknown function of the component UPnP. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the Universal Plug-and-Play (UPnP) implementation in the Cisco CVR100W Wireless-N VPN Router could allow an unauthenticated, Layer 2-adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition. The remote code execution could occur with root privileges. The vulnerability is due to incomplete range checks of the UPnP input data, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a malicious request to the UPnP listening port of the targeted device. An exploit could allow the attacker to cause the device to reload or potentially execute arbitrary code with root privileges. This vulnerability affects all firmware releases of the Cisco CVR100W Wireless-N VPN Router prior to Firmware Release 1.0.1.22. Cisco Bug IDs: CSCuz72642.

The bug was discovered 05/03/2017. The weakness was presented 05/16/2017 with Cisco as cisco-sa-20170503-cvr100w1 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2017-3882 since 12/21/2016. The attack needs to approached within the local network. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 1.0.1.22 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98287†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.6
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: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CVR100W 1.0.1.22

Timelineinfo

12/21/2016 🔍
05/03/2017 +133 days 🔍
05/03/2017 +0 days 🔍
05/16/2017 +13 days 🔍
05/16/2017 +0 days 🔍
05/17/2017 +1 days 🔍
12/24/2020 +1317 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170503-cvr100w1
Researcher: Cisco.
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3882 (🔍)
GCVE (CVE): GCVE-0-2017-3882
GCVE (VulDB): GCVE-100-101423
SecurityFocus: 98287 - Cisco CVR100W Wireless-N VPN Router CVE-2017-3882 Buffer Overflow Vulnerability
OSVDB: - CVE-2017-3882 - Cisco - CVR100W - Buffer Overflow Issue
SecurityTracker: 1038391

Entryinfo

Created: 05/17/2017 08:02
Updated: 12/24/2020 15:33
Changes: 05/17/2017 08:02 (62), 09/29/2020 10:58 (6), 12/24/2020 15:27 (3), 12/24/2020 15:33 (1)
Complete: 🔍
Cache ID: 216::103

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