CVE-2019-9793

Priority
Description
A mechanism was discovered that removes some bounds checking for string,
array, or typed array accesses if Spectre mitigations have been disabled.
This vulnerability could allow an attacker to create an arbitrary value in
compiled JavaScript, for which the range analysis will infer a fully
controlled, incorrect range in circumstances where users have explicitly
disabled Spectre mitigations. *Note: Spectre mitigations are currently
enabled for all users by default settings.*. This vulnerability affects
Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Assigned-to
chrisccoulson
Notes
tyhicksmozjs contains a copy of the SpiderMonkey JavaScript engine
Package
Upstream:released (66.0)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was released [66.0.1+build1-0ubuntu0.14.04.1])
Ubuntu 16.04 LTS (Xenial Xerus):released (66.0+build3-0ubuntu0.16.04.2)
Ubuntu 18.04 LTS (Bionic Beaver):released (66.0+build3-0ubuntu0.18.04.1)
Ubuntu 19.10 (Eoan Ermine):released (66.0+build3-0ubuntu1)
Ubuntu 20.04 (Focal Fossa):released (66.0+build3-0ubuntu1)
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):needs-triage
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):needs-triage
Ubuntu 19.10 (Eoan Ermine):needs-triage
Ubuntu 20.04 (Focal Fossa):needs-triage
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):needs-triage
Ubuntu 20.04 (Focal Fossa):needs-triage
Package
Priority: Low
Upstream:released (60.6)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was released [1:60.6.1+build2-0ubuntu0.14.04.1])
Ubuntu 16.04 LTS (Xenial Xerus):released (1:60.6.1+build2-0ubuntu0.16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (1:60.6.1+build2-0ubuntu0.18.04.1)
Ubuntu 19.10 (Eoan Ermine):released (60.6.1+build2-0ubuntu1)
Ubuntu 20.04 (Focal Fossa):released (60.6.1+build2-0ubuntu1)
More Information

Updated: 2020-01-29 19:05:07 UTC (commit 40f18bf14da5fb50662e1f861ea594a462b207fe)