Cisco Linksys Router up to E4200 tmUnblock.cgi ttcp_ip privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.2$0-$5k0.00

A vulnerability was found in Cisco Linksys Router up to E4200 (Router Operating System) and classified as very critical. Affected by this issue is an unknown function of the file tmUnblock.cgi. The manipulation of the argument ttcp_ip with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The bug was discovered 02/13/2013. The weakness was disclosed 02/17/2014 by Johannes Ullrich as File 125253 as not defined exploit (Packetstorm). The advisory is available at packetstormsecurity.com. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/30/2019). This vulnerability is assigned to T1068 by the MITRE ATT&CK project. This vulnerability has a historic impact due to its background and reception.

A public exploit has been developed in Python and been published even before and not after the advisory. It is declared as highly functional. The exploit is available at packetstormsecurity.com. As 0-day the estimated underground price was around $25k-$100k. A worm is spreading, which is automatically exploiting this vulnerability.

Addressing this vulnerability is possible by firewalling tcp/8080. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (91196). reddit.com is providing further details. The entry 12069 is pretty similar.

Productinfo

Type

Vendor

Name

License

  • commercial

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.2

VulDB Base Score: 9.8
VulDB Temp Score: 9.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Wormified: 🔍
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

02/13/2013 🔍
02/13/2013 +0 days 🔍
02/13/2013 +0 days 🔍
02/13/2014 +365 days 🔍
02/17/2014 +4 days 🔍
02/22/2014 +5 days 🔍
03/30/2019 +1862 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: File 125253
Researcher: Johannes Ullrich
Status: Not defined
X-Force: 91196 - Multiple Linksys routers tmUnblock.cgi command execution, High Risk
SecurityFocus: 65585 - Multiple Linksys Devices Multiple Remote Code Execution Vulnerabilities
Secunia: 56994

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/22/2014 03:03 PM
Updated: 03/30/2019 03:48 PM
Changes: 02/22/2014 03:03 PM (53), 03/30/2019 03:48 PM (10)
Complete: 🔍

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