CVE-2022-40958 - Mozilla: Bypassing Secure Context restriction for cookies with __Host and __Secure prefix

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MEDIUM

Mozilla: Bypassing Secure Context restriction for cookies with Host and Secure prefix

Published Dec 22, 2022

6.5

MEDIUM

CVSS 3.1

EPSS 1.13%

Description

By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

Affected products

Vendor Mozilla Product Firefox Default
unknown
Affected
- ≥ unspecified, < 105
Vendor Mozilla Product Firefox ESR Default
unknown
Affected
- ≥ unspecified, < 102.3
Vendor Mozilla Product Thunderbird Default
unknown
Affected
- ≥ unspecified, < 102.3

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
Mozilla	Firefox	unknown	Affected ≥ unspecified, < 105
Mozilla	Firefox ESR	unknown	Affected ≥ unspecified, < 102.3
Mozilla	Thunderbird	unknown	Affected ≥ unspecified, < 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 (2)

CWE-74

CWE-784

References (10)

https://access.redhat.com/security/cve/CVE-2022-40958
Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1779993
Issue TrackingPermissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=2128794
Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-44204
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2022-40958
https://www.cve.org/CVERecord?id=CVE-2022-40958
https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40958
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-2022-40958		Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1779993		Issue TrackingPermissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=2128794		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-44204		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2022-40958
https://www.cve.org/CVERecord?id=CVE-2022-40958
https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/#CVE-2022-40958
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

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mozilla

Published Dec 22, 2022

Updated Apr 15, 2025

Reserved Sep 19, 2022

Link CVE-2022-40958

CISA Vulnrichment

Updated Apr 15, 2025

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2022-40958

Red Hat

Severity Moderate

Public date Sep 20, 2022

Bugzilla 2128794

Link CVE-2022-40958

ENISA EUVD

Assigner mozilla

Published Dec 22, 2022

Updated Apr 15, 2025

Link EUVD-2022-44204

GitHub

No data