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Vulnerability of MongoDB Server: denial of service via Regex Query

Synthesis of the vulnerability 

An attacker can trigger a fatal error via Regex Query of MongoDB Server, in order to trigger a denial of service.
Vulnerable systems: MongoDB Server.
Severity of this threat: 2/4.
Creation date: 02/03/2021.
Références of this weakness: CVE-2020-7929, VIGILANCE-VUL-34724.

Description of the vulnerability 

An attacker can trigger a fatal error via Regex Query of MongoDB Server, in order to trigger a denial of service.
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This computer vulnerability impacts software or systems such as MongoDB Server.

Our Vigil@nce team determined that the severity of this weakness bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of user console.

An attacker with a expert ability can exploit this weakness.

Solutions for this threat 

MongoDB Server: version 4.0.20.
The version 4.0.20 is fixed:
  https://www.mongodb.org/

MongoDB Server: version 3.6.21.
The version 3.6.21 is fixed:
  https://www.mongodb.org/
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