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Jenkins Advisory 2021-04-07: CVE-2021-21639: Lack of type validation in agent related REST API

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Jenkins Advisory 2021-04-07: CVE-2021-21639: Lack of type validation in agent related REST API

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:P/A:N)
Published
04/07/2021
Created
12/08/2021
Added
12/02/2021
Modified
07/12/2022

Description

Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the `config.xml` REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.

Solution(s)

  • jenkins-lts-upgrade-2_277_2
  • jenkins-upgrade-2_287

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