ASUS RT-AC88U Download Master up to 3.1.0.105 dm_apply.cgi direct request

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.
5.7$0-$5k0.04

A vulnerability was found in ASUS RT-AC88U Download Master up to 3.1.0.105 and classified as problematic. This issue affects an unknown functionality of the file /downloadmaster/dm_apply.cgi?action_mode=initial&download_type=General&special_cgi=get_language. The manipulation with an unknown input leads to a direct request vulnerability. Using CWE to declare the problem leads to CWE-425. The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files. Impacted is confidentiality.

The weakness was disclosed 12/08/2020 by Marc Ruef with scip AG as VDB-165677 as confirmed entry (VulDB). The advisory is shared at vuldb.com. The public release has been coordinated in cooperation with ASUS. The identification of this vulnerability is CVE-2020-29656. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1006 for this issue.

A public exploit has been developed by Marc Ruef and been published immediately after the advisory. The exploit is available at vuldb.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 91 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.1.0.108 eliminates this vulnerability.

Productinfo

Vendor

Name

License

  • commercial

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Direct request
CWE: CWE-425
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Marc Ruef
Download: 🔍

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: 🔍
Reliability: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: RT-AC88U Download Master 3.1.0.108

Timelineinfo

09/08/2020 🔍
09/08/2020 +0 days 🔍
12/08/2020 +91 days 🔍
12/08/2020 +0 days 🔍
12/08/2020 +0 days 🔍
12/09/2020 +0 days 🔍
12/13/2020 +4 days 🔍

Sourcesinfo

Vendor: asus.com

Advisory: VDB-165677
Researcher: Marc Ruef
Organization: scip AG
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2020-29656 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/08/2020 07:49 AM
Updated: 12/13/2020 09:10 AM
Changes: 12/08/2020 07:49 AM (38), 12/08/2020 07:52 AM (23), 12/09/2020 09:20 AM (1), 12/13/2020 09:07 AM (2), 12/13/2020 09:10 AM (18)
Complete: 🔍

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