CVE-2022-29912

Mozilla: Reader mode bypassed SameSite cookies

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Requests initiated through reader mode did not properly omit cookies with a SameSite attribute. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

Las solicitudes iniciadas a través del modo lector no omitieron correctamente las cookies con un atributo SameSite. Esta vulnerabilidad afecta a Thunderbird < 91.9, Firefox ESR < 91.9 y Firefox < 100.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of requests initiated through the reader mode did not properly omit cookies with a SameSite attribute.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.0 ESR. Issues addressed include a bypass vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-04-29 CVE Reserved
2022-05-04 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-565: Reliance on Cookies without Validation and Integrity Checking
CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC
https://bugzilla.mozilla.org/show_bug.cgi?id=1692655	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2022-16	2023-01-04
https://www.mozilla.org/security/advisories/mfsa2022-17	2023-01-04
https://www.mozilla.org/security/advisories/mfsa2022-18	2023-01-04
https://access.redhat.com/security/cve/CVE-2022-29912	2022-05-18
https://bugzilla.redhat.com/show_bug.cgi?id=2081472	2022-05-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				< 100.0 Search vendor "Mozilla" for product "Firefox" and version " < 100.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 91.9 Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.9"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 91.9 Search vendor "Mozilla" for product "Thunderbird" and version " < 91.9"		-		Affected