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Red Hat: CVE-2020-26950: CVE-2020-26950 Mozilla: Write side effects in MCallGetProperty opcode not accounted for (Multiple Advisories)

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Red Hat: CVE-2020-26950: CVE-2020-26950 Mozilla: Write side effects in MCallGetProperty opcode not accounted for (Multiple Advisories)

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
11/12/2020
Created
11/14/2020
Added
11/13/2020
Modified
12/15/2023

Description

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Solution(s)

  • redhat-upgrade-firefox
  • redhat-upgrade-firefox-debuginfo
  • redhat-upgrade-firefox-debugsource
  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • CVE-2020-26950
  • RHSA-2020:5099
  • RHSA-2020:5100
  • RHSA-2020:5135
  • RHSA-2020:5139
  • RHSA-2020:5146
  • RHSA-2020:5162
  • RHSA-2020:5163
  • RHSA-2020:5166
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