CVE-2019-9811 json
As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a b…
published 2019-07-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19173
- cvss
- 8.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Mozilla Firefox ESR 60.8
- Mozilla Firefox 68
- Mozilla Thunderbird 60.8
- firefox-esr Debian 14, Debian 13, Debian 12 60.8.0esr-1
- thunderbird Debian 14, Debian 13, Debian 12 1:60.8.0-1
debian advisories DEBIAN-CVE-2019-9811
- firefox Ubuntu 16.04 LTS 68.0+build3-0ubuntu0.16.04.1
- firefox Ubuntu 18.04 LTS 68.0+build3-0ubuntu0.18.04.1
- thunderbird Ubuntu 16.04 LTS 1:60.8.0+build1-0ubuntu0.16.04.2
- thunderbird Ubuntu 18.04 LTS 1:60.8.0+build1-0ubuntu0.18.04.1
ubuntu advisories UBUNTU-CVE-2019-9811
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- thunderbird RHEL 6 60.8.0-1.el6_10
- thunderbird RHEL 7 60.8.0-1.el7_6
- thunderbird RHEL 8 60.8.0-1.el8_0
- firefox RHEL 8 60.8.0-1.el8_0
- firefox RHEL 7 60.8.0-1.el7_6
- firefox RHEL 6 60.8.0-1.el6_10
red hat advisories RHSA-2019:1777RHSA-2019:1775RHSA-2019:1799RHSA-2019:1764RHSA-2019:1763RHSA-2019:1765
- MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +18 more 68.1.0-109.89.1
- MozillaFirefox-branding-SLE SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 68-32.8.1
- MozillaFirefox SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 68.1.0-3.54.2
- MozillaFirefox-branding-SLE SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 68-4.8.5
- MozillaFirefox SLES 12 SP4, SLES 12 SP3-BCL, SLES 12 SP2-BCL +15 more 60.8.0-109.83.3
- mozilla-nss SLES 12 SP4, SLES 12 SP3-BCL, SLES 12 SP2-BCL +15 more 3.44.1-58.28.1
- MozillaThunderbird SLE Workstation Extension 15 SP1, SLE Workstation Extension 15 60.8.0-3.46.2
- MozillaFirefox SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 60.8.0-3.51.4
suse advisories SUSE-SU-2019:14246-1SUSE-SU-2019:2620-1SUSE-SU-2019:2545-1SUSE-SU-2019:1861-2SUSE-SU-2019:1960-1SUSE-SU-2019:1869-1
- firefox-esr openSUSE Tumbleweed 128.5.1-1.1
- MozillaFirefox openSUSE Tumbleweed 92.0-1.2
- MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1
- MozillaFirefox openSUSE Leap 15.0 68.1.0-lp150.3.66.1
- MozillaFirefox openSUSE Leap 15.1 68.1.0-lp151.2.14.1
- MozillaThunderbird Package Hub 12 60.8.0-88.1
- MozillaThunderbird openSUSE Leap 15.1, openSUSE Leap 15.0 60.8.0-lp151.2.10.1
- mozilla-nss openSUSE Leap 15.0 3.44.1-lp150.2.24.1
opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1openSUSE-SU-2024:10601-1openSUSE-SU-2019:2260-1openSUSE-SU-2019:2251-1openSUSE-SU-2019:1990-1
- firefox-esr Alpine 3.10, Alpine 3.9 60.8.0-r0
- firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +10 more 68.0-r0
alpine advisories ALPINE-CVE-2019-9811
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- firefox Arch Linux 68.0-1
arch linux advisories AVG-1002
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2019-9811 updated cvss 7.5
Mozilla: Sandbox escape via installation of malicious language pack
-
Red Hat Enterprise Linux 5 firefoxaffected: no fix planned “Out of support scope”
-
Red Hat Enterprise Linux AppStream (v. 8) firefox 60.8.0-1.el8_0, thunderbird 60.8.0-1.el8_0fixed: vendor fix RHSA-2019:1764
-
Red Hat Enterprise Linux Client (v. 7) firefox 60.8.0-1.el7_6, thunderbird 60.8.0-1.el7_6 Red Hat Enterprise Linux Client Optional (v. 7) firefox 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
-
Red Hat Enterprise Linux Desktop (v. 6) firefox 60.8.0-1.el6_10, thunderbird 60.8.0-1.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 60.8.0-1.el6_10fixed: vendor fix RHSA-2019:1765
-
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
-
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1775
-
Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 60.8.0-1.el6_10 Red Hat Enterprise Linux Server (v. 6) firefox 60.8.0-1.el6_10fixed: vendor fix RHSA-2019:1765
-
Red Hat Enterprise Linux Server (v. 7) firefox 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
show 6 moreshow fewer
-
Red Hat Enterprise Linux Server Optional (v. 6) firefox 60.8.0-1.el6_10, thunderbird 60.8.0-1.el6_10fixed: vendor fix RHSA-2019:1765
-
Red Hat Enterprise Linux Server Optional (v. 7) firefox 60.8.0-1.el7_6, thunderbird 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
-
Red Hat Enterprise Linux Workstation (v. 6) firefox 60.8.0-1.el6_10, thunderbird 60.8.0-1.el6_10fixed: vendor fix RHSA-2019:1765
-
Red Hat Enterprise Linux Workstation (v. 7) firefox 60.8.0-1.el7_6, thunderbird 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
-
Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 60.8.0-1.el6_10fixed: vendor fix RHSA-2019:1765
-
Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 60.8.0-1.el7_6fixed: vendor fix RHSA-2019:1763
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
2.57% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1539598 referenced PoC, tagged "exploit" by a source, unverified
- bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1563327 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
Affected products
- Mozilla Firefox ESR
- Mozilla Firefox
- Mozilla Thunderbird
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
bugzilla.mozilla.org
/show_bug.cgi?id=1539598
exploit, issue-tracking, patch, vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1563327
exploit, issue-tracking, vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-07/msg00055.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-07/msg00058.html
vendor-advisory, third-party-advisory
-
security.gentoo.org
/glsa/201908-12
vendor-advisory, third-party-advisory
-
security.gentoo.org
/glsa/201908-20
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-08/msg00073.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-10/msg00011.html
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-10/msg00017.html
vendor-advisory, third-party-advisory
-
mozilla.org
/security/advisories/mfsa2019-21/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2019-22/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2019-23/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1538007
issue-tracking, permissions-required
-
lists.debian.org
/debian-lts-announce/2019/08/msg00001.html
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/08/msg00002.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2019-9811
- NVD CVE-2019-9811
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.