Description

When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1660211

https://lists.debian.org/debian-lts-announce/2020/10/msg00020.html

https://security.gentoo.org/glsa/202010-02

https://www.debian.org/security/2020/dsa-4770

https://www.mozilla.org/security/advisories/mfsa2020-42/

https://www.mozilla.org/security/advisories/mfsa2020-43/

https://www.mozilla.org/security/advisories/mfsa2020-44/

Details

Risk Information

CVSS v2

CVSS v3