CVE-2019-9793
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-9793
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-9793.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201903-11
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 66.0-1 | |
| sles | affected | | |
| debian | sid | fixed | 66.0-1 |
| debian | bookworm | fixed | 60.6.0esr-1 |
| debian | bullseye | fixed | 60.6.0esr-1 |
| debian | forky | fixed | 60.6.0esr-1 |
| debian | trixie | fixed | 60.6.0esr-1 |
References
Verify integrity in audit chain (admin only). AS-IS.