CVE-2022-45412

Mozilla: Symlinks may resolve to partially uninitialized buffers

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When resolving a symlink such as <code>file:///proc/self/fd/1</code>, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer. <br>*This bug only affects Thunderbird on Unix-based operated systems (Android, Linux, MacOS). Windows is unaffected.*. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Al resolver un enlace simbólico como <code>file:///proc/self/fd/1</code>, se puede producir un mensaje de error donde el enlace simbólico se resolvió en una cadena que contiene memoria no inicializada en el búfer. <br>*Este error solo afecta a Thunderbird en sistemas operados basados en Unix (Android, Linux, MacOS). Windows no se ve afectado.*. Esta vulnerabilidad afecta a Firefox ESR < 102,5, Thunderbird < 102.5 y Firefox < 107.

The Mozilla Foundation Security Advisory describes this flaw as: When resolving a symlink such as file:///proc/self/fd/1, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer.

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-11-14 CVE Reserved
2022-11-16 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-59: Improper Link Resolution Before File Access ('Link Following')
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2022-47	2023-01-05
https://www.mozilla.org/security/advisories/mfsa2022-48	2023-01-05
https://www.mozilla.org/security/advisories/mfsa2022-49	2023-01-05
https://access.redhat.com/security/cve/CVE-2022-45412	2022-12-13
https://bugzilla.redhat.com/show_bug.cgi?id=2143205	2022-12-13

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"	< 107.0 Search vendor "Mozilla" for product "Firefox" and version " < 107.0"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Search vendor "Mozilla" for product "Firefox"	< 107.0 Search vendor "Mozilla" for product "Firefox" and version " < 107.0"	-	Affected	in	Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Search vendor "Mozilla" for product "Firefox"	< 107.0 Search vendor "Mozilla" for product "Firefox" and version " < 107.0"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"	< 102.5 Search vendor "Mozilla" for product "Firefox Esr" and version " < 102.5"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"	< 102.5 Search vendor "Mozilla" for product "Firefox Esr" and version " < 102.5"	-	Affected	in	Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"	< 102.5 Search vendor "Mozilla" for product "Firefox Esr" and version " < 102.5"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe
Mozilla Search vendor "Mozilla"	Thunderbird Search vendor "Mozilla" for product "Thunderbird"	< 102.5 Search vendor "Mozilla" for product "Thunderbird" and version " < 102.5"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Mozilla Search vendor "Mozilla"	Thunderbird Search vendor "Mozilla" for product "Thunderbird"	< 102.5 Search vendor "Mozilla" for product "Thunderbird" and version " < 102.5"	-	Affected	in	Google Search vendor "Google"	Android Search vendor "Google" for product "Android"	-	-	Safe
Mozilla Search vendor "Mozilla"	Thunderbird Search vendor "Mozilla" for product "Thunderbird"	< 102.5 Search vendor "Mozilla" for product "Thunderbird" and version " < 102.5"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe