CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.6	$0-$5k	0.00

A vulnerability classified as very critical was found in Linksys BEFSR11, BEFSR41 and BEFSRU31 1.42.7. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Linksys EtherFast Cable/DSL BEFSR11, BEFSR41 and BEFSRU31 with the firmware 1.42.7 upgrade installed opens TCP port 5678 for remote administration even when the "Block WAN" and "Remote Admin" options are disabled, which allows remote attackers go gain access.

The bug was discovered 06/09/2002. The weakness was released 12/31/2002 (Website). The advisory is shared at iss.net. This vulnerability is known as CVE-2002-2159 since 11/16/2005. The exploitation appears to be easy. 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 price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/18/2019). MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 205 days. During that time the estimated underground price was around $0-$5k.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the vulnerability database at X-Force (9330). Entry connected to this vulnerability is available at 19542.

Productinfo

Vendor

• Linksys

Name

• BEFSR11
• BEFSR41
• BEFSRU31

Version

• 1.42.7

License

• commercial

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/09/2002 🔍
12/31/2002 +205 days 🔍
12/31/2002 +0 days 🔍
12/31/2002 +0 days 🔍
11/16/2005 +1051 days 🔍
05/09/2007 +539 days 🔍
08/06/2014 +2646 days 🔍
07/18/2019 +1807 days 🔍

Sourcesinfo

Vendor: linksys.com

Advisory: iss.net
Status: Not defined

CVE: CVE-2002-2159 (🔍)
X-Force: 9330
Vulnerability Center: 15055 - Linksys EtherFast Remote Administrative Access via TCP Port 5678, Critical
SecurityFocus: 4987
OSVDB: 60101 - LinkSys - EtherFast Router - Remote Administration Enabled Vulnerability

See also: 🔍

Entryinfo

Created: 08/06/2014 12:08
Updated: 07/18/2019 20:37
Changes: 08/06/2014 12:08 (56), 07/18/2019 20:37 (3)
Complete: 🔍

Discussion

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