CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.6 | $0-$5k | 0.00 |
A vulnerability was found in Telus WCB3000N 0.16.2.5. It has been classified as critical. Affected is an unknown function in the library /advlocalssh.cgi of the component SSH. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was disclosed 11/07/2016 by Andrew Klaus as Actiontec WCB3000N (Telus Branded) Local Unauthenticated Privilege Elevation as not defined mailinglist post (Full-Disclosure). The advisory is available at seclists.org. The vendor was not involved in the coordination of the public release. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.
A public exploit has been developed by Andrew Klaus and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The code used by the exploit is:
import requests ssh_data = {"command": "apply", "mypage": "adv_localssh.html", "advanced_ssh_enable":"1", "advanced_ssh_username":"admin", "advanced_ssh_password":"admin", "advanced_ssh_port":"22", "advanced_ssh_timeout":"", "sel_ssh_timeout":"1800", "custom_ssh_timeout": ""} s = requests.session() s.post("http://<device_ip>/advlocalssh.cgi", ssh_data)
It is possible to mitigate the weakness by firewalling tcp/22 (ssh).
Further details are available at seclists.org. The entry 93281 is pretty similar.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 8.6
VulDB Base Score: 9.8
VulDB Temp Score: 8.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: 🔍
Exploiting
Class: Privileges managementCWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Andrew Klaus
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: FirewallStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Firewalling: 🔍
Timeline
11/07/2016 🔍11/07/2016 🔍
11/07/2016 🔍
07/25/2019 🔍
Sources
Advisory: Actiontec WCB3000N (Telus Branded) Local Unauthenticated Privilege ElevationResearcher: Andrew Klaus
Status: Not defined
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍
Entry
Created: 11/07/2016 17:09Updated: 07/25/2019 08:30
Changes: 11/07/2016 17:09 (51), 07/25/2019 08:30 (1)
Complete: 🔍
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