CVE-2020-15678

moderate-risk

Published 2020-10-01

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.

Do I need to act?

0.87% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (7)

Firefox

Firefox Esr

Thunderbird

Leap

Debian Linux

Affected Vendors

Debian Mozilla Opensuse

References (18)

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

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

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

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

Third Party Advisory https://security.gentoo.org/glsa/202010-02

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

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

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

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