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Jenkins Advisory 2021-01-13: CVE-2021-21610: Reflected XSS vulnerability in markup formatter preview

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Jenkins Advisory 2021-01-13: CVE-2021-21610: Reflected XSS vulnerability in markup formatter preview

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
01/13/2021
Created
12/08/2021
Added
12/02/2021
Modified
07/12/2022

Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.

Solution(s)

  • jenkins-lts-upgrade-2_263_2
  • jenkins-upgrade-2_275

References

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