CVE-2019-9790 - Mozilla: Use-after-free when removing in-use DOM elements

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CRITICAL

Mozilla: Use-after-free when removing in-use DOM elements

Published Apr 26, 2019

9.8

CRITICAL

CVSS 3.0

EPSS 1.85%

Description

A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

Vendor Mozilla Product Firefox Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <66
Vendor Mozilla Product Firefox ESR Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <60.6
Vendor Mozilla Product Thunderbird Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <60.6

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Mozilla

Firefox

n/a

Version	Status	Constraints
unspecified	affected	<66

Mozilla

Firefox ESR

n/a

Version	Status	Constraints
unspecified	affected	<60.6

Mozilla

Thunderbird

n/a

Version	Status	Constraints
unspecified	affected	<60.6

Red Hat Enterprise Linux 6

firefox-0:60.6.0-3.el6_10

Fixed · RHSA-2019:0623
Red Hat Enterprise Linux 6

thunderbird-0:60.6.1-1.el6_10

Fixed · RHSA-2019:0680
Red Hat Enterprise Linux 7

firefox-0:60.6.0-3.el7_6

Fixed · RHSA-2019:0622
Red Hat Enterprise Linux 7

thunderbird-0:60.6.1-1.el7_6

Fixed · RHSA-2019:0681
Red Hat Enterprise Linux 8

firefox-0:60.6.1-1.el8

Fixed · RHSA-2019:0966
Red Hat Enterprise Linux 8

thunderbird-0:60.6.1-1.el8

Fixed · RHSA-2019:1144

Product	Package	State	Advisory
Red Hat Enterprise Linux 6	firefox-0:60.6.0-3.el6_10	Fixed	RHSA-2019:0623
Red Hat Enterprise Linux 6	thunderbird-0:60.6.1-1.el6_10	Fixed	RHSA-2019:0680
Red Hat Enterprise Linux 7	firefox-0:60.6.0-3.el7_6	Fixed	RHSA-2019:0622
Red Hat Enterprise Linux 7	thunderbird-0:60.6.1-1.el7_6	Fixed	RHSA-2019:0681
Red Hat Enterprise Linux 8	firefox-0:60.6.1-1.el8	Fixed	RHSA-2019:0966
Red Hat Enterprise Linux 8	thunderbird-0:60.6.1-1.el8	Fixed	RHSA-2019:1144

Remediation

Red Hat statement

In general, this flaw be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

Weaknesses (1)

CWE-416

Use After Free

References (12)

https://access.redhat.com/errata/RHSA-2019:0966
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1144
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2019-9790
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1525145
x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1690675
Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-19152
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-9790
https://www.cve.org/CVERecord?id=CVE-2019-9790
https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9790
https://www.mozilla.org/security/advisories/mfsa2019-07/
x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/
x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://access.redhat.com/errata/RHSA-2019:0966		vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1144		vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2019-9790		Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1525145		x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1690675		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-19152		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2019-9790
https://www.cve.org/CVERecord?id=CVE-2019-9790
https://www.mozilla.org/en-US/security/advisories/mfsa2019-08/#CVE-2019-9790
https://www.mozilla.org/security/advisories/mfsa2019-07/		x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/		x_refsource_MISCVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/		x_refsource_MISCVendor Advisory