CVE-2022-40960 - Mozilla: Data-race when parsing non-UTF-8 URLs in threads

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MEDIUM

Mozilla: Data-race when parsing non-UTF-8 URLs in threads

Published Dec 22, 2022

6.5

MEDIUM

CVSS 3.1

EPSS 1.04%

Description

Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

Affected products

Vendor Mozilla Product Firefox Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <105
Vendor Mozilla Product Firefox ESR Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <102.3
Vendor Mozilla Product Thunderbird Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <102.3

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	<105

Mozilla

Firefox ESR

n/a

Version	Status	Constraints
unspecified	affected	<102.3

Mozilla

Thunderbird

n/a

Version	Status	Constraints
unspecified	affected	<102.3

Red Hat Enterprise Linux 7

firefox-0:102.3.0-6.el7_9

Fixed · RHSA-2022:6711
Red Hat Enterprise Linux 7

thunderbird-0:102.3.0-3.el7_9

Fixed · RHSA-2022:6710
Red Hat Enterprise Linux 8

firefox-0:102.3.0-6.el8_6

Fixed · RHSA-2022:6702
Red Hat Enterprise Linux 8

thunderbird-0:102.3.0-3.el8_6

Fixed · RHSA-2022:6708
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

firefox-0:102.3.0-6.el8_1

Fixed · RHSA-2022:6703
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

thunderbird-0:102.3.0-3.el8_1

Fixed · RHSA-2022:6716
Red Hat Enterprise Linux 8.2 Extended Update Support

firefox-0:102.3.0-6.el8_2

Fixed · RHSA-2022:6707
Red Hat Enterprise Linux 8.2 Extended Update Support

thunderbird-0:102.3.0-3.el8_2

Fixed · RHSA-2022:6715
Red Hat Enterprise Linux 8.4 Extended Update Support

firefox-0:102.3.0-6.el8_4

Fixed · RHSA-2022:6701
Red Hat Enterprise Linux 8.4 Extended Update Support

thunderbird-0:102.3.0-3.el8_4

Fixed · RHSA-2022:6713
Red Hat Enterprise Linux 9

firefox-0:102.3.0-6.el9_0

Fixed · RHSA-2022:6700
Red Hat Enterprise Linux 9

thunderbird-0:102.3.0-3.el9_0

Fixed · RHSA-2022:6717
Red Hat Enterprise Linux 6

firefox

Out of support scope
Red Hat Enterprise Linux 6

thunderbird

Out of support scope

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	firefox-0:102.3.0-6.el7_9	Fixed	RHSA-2022:6711
Red Hat Enterprise Linux 7	thunderbird-0:102.3.0-3.el7_9	Fixed	RHSA-2022:6710
Red Hat Enterprise Linux 8	firefox-0:102.3.0-6.el8_6	Fixed	RHSA-2022:6702
Red Hat Enterprise Linux 8	thunderbird-0:102.3.0-3.el8_6	Fixed	RHSA-2022:6708
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions	firefox-0:102.3.0-6.el8_1	Fixed	RHSA-2022:6703
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions	thunderbird-0:102.3.0-3.el8_1	Fixed	RHSA-2022:6716
Red Hat Enterprise Linux 8.2 Extended Update Support	firefox-0:102.3.0-6.el8_2	Fixed	RHSA-2022:6707
Red Hat Enterprise Linux 8.2 Extended Update Support	thunderbird-0:102.3.0-3.el8_2	Fixed	RHSA-2022:6715
Red Hat Enterprise Linux 8.4 Extended Update Support	firefox-0:102.3.0-6.el8_4	Fixed	RHSA-2022:6701
Red Hat Enterprise Linux 8.4 Extended Update Support	thunderbird-0:102.3.0-3.el8_4	Fixed	RHSA-2022:6713
Red Hat Enterprise Linux 9	firefox-0:102.3.0-6.el9_0	Fixed	RHSA-2022:6700
Red Hat Enterprise Linux 9	thunderbird-0:102.3.0-3.el9_0	Fixed	RHSA-2022:6717
Red Hat Enterprise Linux 6	firefox	Out of support scope	n/a
Red Hat Enterprise Linux 6	thunderbird	Out of support scope	n/a

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-416

Use After Free

References (9)

https://access.redhat.com/security/cve/CVE-2022-40960
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1787633
Issue TrackingPermissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=2128793
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2022-40960
https://www.cve.org/CVERecord?id=CVE-2022-40960
https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40960
https://www.mozilla.org/security/advisories/mfsa2022-40/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-41/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-42/
Vendor Advisory

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2022-40960		Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1787633		Issue TrackingPermissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=2128793		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2022-40960
https://www.cve.org/CVERecord?id=CVE-2022-40960
https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40960
https://www.mozilla.org/security/advisories/mfsa2022-40/		Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-41/		Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-42/		Vendor Advisory