Linux Kernel KCodes NetUSB run_init_sbus memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.2$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System). It has been rated as very critical. This issue affects the function run_init_sbus of the component KCodes NetUSB. 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:

Stack-based buffer overflow in the run_init_sbus function in the KCodes NetUSB module for the Linux kernel, as used in certain NETGEAR products, TP-LINK products, and other products, allows remote attackers to execute arbitrary code by providing a long computer name in a session on TCP port 20005.

The weakness was released 05/21/2015 with SEC Consult as KCodes NetUSB: How a Small Taiwanese Software Company Can Impact the Security of Millions of Devices Worldwide as not defined blog post (Website). It is possible to read the advisory at blog.sec-consult.com. The identification of this vulnerability is CVE-2015-3036 since 04/08/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/09/2017).

A public exploit has been developed by Adrián Ruiz Bermudo in Python and been published 6 months after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The advisory illustrates:

We found references to 26 vendors in the file “NetUSB.inf”, which is part of the client driver setup for Windows. It is likely, that these vendors have licensed the NetUSB technology and are using it in some of their products.

Addressing this vulnerability is possible by firewalling tcp/20005.

The vulnerability is also documented in the vulnerability database at Exploit-DB (38566).

Affected

  • D-Link Router
  • Netgear Router
  • TP-LINK Router
  • Trendnet Router
  • ZyXEL Router

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.2

VulDB Base Score: 10.0
VulDB Temp Score: 9.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Adrián Ruiz Bermudo
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Exploit Delay Time: 🔍

Firewalling: 🔍

Timelineinfo

04/08/2015 🔍
05/19/2015 +41 days 🔍
05/20/2015 +1 days 🔍
05/20/2015 +0 days 🔍
05/21/2015 +1 days 🔍
05/21/2015 +0 days 🔍
05/21/2015 +0 days 🔍
05/25/2015 +4 days 🔍
10/29/2015 +157 days 🔍
10/29/2015 +0 days 🔍
08/09/2017 +650 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: KCodes NetUSB: How a Small Taiwanese Software Company Can Impact the Security of Millions of Devices Worldwide
Organization: SEC Consult
Status: Not defined

CVE: CVE-2015-3036 (🔍)
CERT VU: 🔍
SecurityTracker: 1032377 - NETGEAR Router KCodes NetUSB Driver Buffer Overflow Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 50278 - KCodes NetUSB Kernel Driver Remote Code Execution via Long Computer Name, Critical
SecurityFocus: 74724 - KCodes NetUSB CVE-2015-3036 Buffer Overflow Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/21/2015 10:17
Updated: 08/09/2017 14:06
Changes: 05/21/2015 10:17 (70), 08/09/2017 14:06 (10)
Complete: 🔍

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