Rapid7 Vulnerability & Exploit Database

MFSA2020-56 Thunderbird: Security Vulnerabilities fixed in Thunderbird 78.6 (CVE-2020-26974)

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MFSA2020-56 Thunderbird: Security Vulnerabilities fixed in Thunderbird 78.6 (CVE-2020-26974)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/15/2020
Created
12/16/2020
Added
12/16/2020
Modified
01/14/2021

Description

When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Solution(s)

  • mozilla-thunderbird-upgrade-78_6

References

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