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CVE-2019-9796 A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is late...

CriticalCVSS 9.8 EPSS 2.1%
Published
Updated
Exploit status
No public exploit known

Description

A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

ProductAffected versionsFixed in
debian/firefox-esr(Debian:12) < 60.6.0esr-1 60.6.0esr-1
debian/firefox-esr(Debian:13) < 60.6.0esr-1 60.6.0esr-1
debian/firefox-esr(Debian:14) < 60.6.0esr-1 60.6.0esr-1
debian/thunderbird(Debian:12) < 1:60.6.1-1 1:60.6.1-1
debian/thunderbird(Debian:13) < 1:60.6.1-1 1:60.6.1-1
debian/thunderbird(Debian:14) < 1:60.6.1-1 1:60.6.1-1
mozilla Firefox < 60.6.0 60.6.0
mozilla Firefox < 66.0 66.0
mozilla Thunderbird < 60.6.0 60.6.0
alpine/firefox-esr(Alpine:v3.10) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.11) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.12) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.13) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.14) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.15) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.16) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.17) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.18) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.19) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.20) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.21) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.22) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.23) < 60.6.1-r0 60.6.1-r0
alpine/firefox-esr(Alpine:v3.9) < 60.6.1-r0 60.6.1-r0
mozilla Thunderbird < 60.6 60.6
Show 2 more
ProductAffected versionsFixed in
mozilla firefox esr < 60.6 60.6
mozilla Firefox < 66 66

References