ASUS RT-AC88U Download Master up to 3.1.0.105 Title productname injection

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.05

A vulnerability was found in ASUS RT-AC88U Download Master up to 3.1.0.105. It has been classified as problematic. Affected is some unknown functionality of the file /Main_Login.asp?flag=1&productname=RT-AC88U&url=/downloadmaster/task.asp of the component Title Handler. The manipulation of the argument productname with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-74. This is going to have an impact on integrity.

The weakness was presented 12/08/2020 by Marc Ruef with scip AG as VDB-165678 as confirmed entry (VulDB). The advisory is available at vuldb.com. The public release was coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2020-29655 since 12/09/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known.

A public exploit has been developed by Marc Ruef and been published immediately after the advisory. It is declared as proof-of-concept. The exploit is shared for download at vuldb.com. 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.

Productinfoedit

Vendor

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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2infoedit

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

NVD Base Score: 🔒

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-74
ATT&CK: Unknown

Local: No
Remote: Yes

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

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒
Exploit Delay Time: 🔍

Upgrade: RT-AC88U Download Master 3.1.0.108

Timelineinfoedit

09/08/2020 Vendor informed
09/08/2020 +0 days Vendor acknowledged
12/08/2020 +91 days Advisory disclosed
12/08/2020 +0 days Exploit disclosed
12/08/2020 +0 days VulDB entry created
12/09/2020 +0 days CVE assigned
12/13/2020 +4 days VulDB last update

Sourcesinfoedit

Vendor: https://www.asus.com/

Advisory: VDB-165678
Researcher: Marc Ruef
Organization: scip AG
Status: Confirmed
Coordinated: 🔒

CVE: CVE-2020-29655 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfoedit

Created: 12/08/2020 08:03 AM
Updated: 12/13/2020 09:21 AM
Changes: (18) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
Complete: 🔍

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