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FreeBSD: VID-5F39D80F-107C-11EB-8B47-641C67A117D8 (CVE-2020-26891): py-matrix-synapse -- XSS vulnerability

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FreeBSD: VID-5F39D80F-107C-11EB-8B47-641C67A117D8 (CVE-2020-26891): py-matrix-synapse -- XSS vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
10/01/2020
Created
10/19/2020
Added
10/18/2020
Modified
10/28/2020

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From VID-5F39D80F-107C-11EB-8B47-641C67A117D8:

Matrix developers reports:

The fallback authentication endpoint served via Synapse were vulnerable

to cross-site scripting (XSS) attacks. The impact depends on the

configuration of the domain that Synapse is deployed on, but may allow

access to cookies and other browser data, CSRF vulnerabilities, and

access to other resources served on the same domain or parent domains.

Solution(s)

  • freebsd-upgrade-package-py36-matrix-synapse
  • freebsd-upgrade-package-py37-matrix-synapse
  • freebsd-upgrade-package-py38-matrix-synapse
  • freebsd-upgrade-package-py39-matrix-synapse

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