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ISN 2021-09: Firefox ESR vulnerabilities

First published 30 November 2021

CVSS 3.1 Base Score: 10.0 (Critical)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Summary

Several vulnerabilities have been found in Mozilla Firefox ESR, many rated as high. These affect the Firefox ESR version in the following IGEL products:

IGEL OS 11

IGEL OS 10

Details

Mozilla has reported various vulnerabilities in Firefox ESR in its Mozilla Foundation Security Advisories (MFSA-2021-49, MFSA-2021-45, MFSA-2021-40, MFSA-2021-37, MFSA-2021-33). Many concern memory safety, and many are exploitable over the network. Overall, 18 are rated high.

Update Instructions

  • IGEL OS 11: Update to IGEL OS 11.06.210.
  • IGEL OS 10: Upgrade to IGEL OS 11.06.210.

References

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