Dell EMC Avamar Server 19.3/19.4 Web UI improper authorization

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.
6.3$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Dell EMC Avamar Server 19.3/19.4 and classified as critical. Affected is an unknown function of the component Web UI. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2021-21511. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Dell EMC Avamar Server 19.3/19.4 (Backup Software). This issue affects an unknown part of the component Web UI. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability.

The weakness was shared 02/16/2021 as dsa-2021-033. The advisory is shared at dell.com. The identification of this vulnerability is CVE-2021-21511. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/01/2021). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
02/16/2021 +43 days 🔍
02/16/2021 +0 days 🔍
03/01/2021 +13 days 🔍

Sourcesinfo

Vendor: dellemc.com

Advisory: dsa-2021-033
Status: Not defined

CVE: CVE-2021-21511 (🔍)
GCVE (CVE): GCVE-0-2021-21511
GCVE (VulDB): GCVE-100-169949

Entryinfo

Created: 02/16/2021 09:04
Updated: 03/01/2021 20:31
Changes: 02/16/2021 09:04 (38), 03/01/2021 20:28 (2), 03/01/2021 20:31 (8)
Complete: 🔍
Cache ID: 216::103

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