CVE-2019-9811

As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Affected

Mozilla · Firefox ESR · Firefox · Thunderbird

CVSS v3.1 NVD

8.3 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v2.0 NVD

5.1 MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P

EPSS

2.57% chance of exploitation in the next 30 days, 85th percentile

Published

2019-07-23

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1563327

Security advisories

• https://bugzilla.mozilla.org/show_bug.cgi?id=1539598
• https://www.mozilla.org/security/advisories/mfsa2019-21
• https://www.mozilla.org/security/advisories/mfsa2019-22
• https://www.mozilla.org/security/advisories/mfsa2019-23
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html
• http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
• https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html
• https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html
• https://security.gentoo.org/glsa/201908-12
• https://security.gentoo.org/glsa/201908-20
• https://bugzilla.mozilla.org/show_bug.cgi?id=1538007

References

• CVE Record
• NVD entry