2021-28626 | Adobe Experience Manager Cloud Service improper authorization (apsb21-39)

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.
3.6	$0-$5k	0.13

A vulnerability was found in Adobe Experience Manager Cloud Service up to 6.5.8.0 (Content Management System) and classified as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-285. Impacted is availability. The summary by CVE is:

Adobe Experience Manager Cloud Service offering, as well as versions 6.5.8.0 (and below) is affected by an Improper Authorization vulnerability allowing users to create nodes under a location. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service. Exploitation of this issue does not require user interaction.

The weakness was disclosed 08/25/2021 as apsb21-39. It is possible to read the advisory at helpx.adobe.com. The identification of this vulnerability is CVE-2021-28626 since 03/16/2021. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/27/2021). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Vendor

Name

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Privilege escalation
CWE: CWE-285
ATT&CK: T1548.002

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: helpx.adobe.com

03/16/2021 CVE assigned
08/25/2021 +161 days Advisory disclosed
08/25/2021 +0 days VulDB entry created
08/27/2021 +1 days VulDB last updateVendor: https://www.adobe.com/

Advisory: apsb21-39
Status: Confirmed

CVE: CVE-2021-28626 (🔒)

Created: 08/25/2021 09:36
Updated: 08/27/2021 01:31
Changes: (1) source_cve_cna
Complete: 🔍

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