CVE-2020-26974 log

Source	CVE Red Hat MITRE NVD Debian Ubuntu SUSE Alpine Mageia CVE Details CIRCL Bugs Arch Linux Red Hat Gentoo SUSE GitHub Lists oss-security full-disclosure bugtraq Misc GitHub code web search
Severity	High
Remote	Yes
Type	Arbitrary code execution
Description	A security issue was found in Firefox before 84.0 and Thunderbird before 78.6. 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.

Group	Package	Affected	Fixed	Severity	Status	Ticket
AVG-1362	firefox	83.0-2	84.0-1	High	Fixed
AVG-1315	thunderbird	78.5.0-1	78.6.0-1	High	Fixed	FS#68853

Date	Advisory	Group	Package	Severity	Type
16 Dec 2020	ASA-202012-25	AVG-1362	firefox	High	multiple issues
16 Dec 2020	ASA-202012-23	AVG-1315	thunderbird	High	multiple issues

References
https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/#CVE-2020-26974 https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/#CVE-2020-26974 https://bugzilla.mozilla.org/show_bug.cgi?id=1681022

References

https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/#CVE-2020-26974
https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/#CVE-2020-26974
https://bugzilla.mozilla.org/show_bug.cgi?id=1681022