CVE-2019-9810

critical

Published 2019-05-07 · Modified 2019-05-13

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CVSS v3

—

CVSS v4 NEW

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not yet in upstream

VIR risk

10.0

Description

Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

Predictions

Exploit likelihood

55%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-47752 local windows_x86-64

Axel Souchet · 2019-12-07

Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack

Source code queued for fetch — refresh in a moment.

EDB-46605 dos multiple

xuechiyaobai · 2019-03-26

Firefox < 66.0.1 - 'Array.prototype.slice' Buffer Overflow

Source code queued for fetch — refresh in a moment.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`60.6.1-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`60.6.1esr-1`
sid	Fixed	`66.0.1-1`
forky	Fixed	`60.6.1esr-1`
bullseye	Fixed	`60.6.1esr-1`
bookworm	Fixed	`60.6.1esr-1`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.