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mozillaMozilla FoundationMFSA2023-23
HistoryJul 04, 2023 - 12:00 a.m.

Security Vulnerabilities fixed in Firefox ESR 102.13 — Mozilla

2023-07-0400:00:00
Mozilla Foundation
www.mozilla.org
16
firefox esr
webrtc connection
cross-compartment wrappers
user confusion
spoofing attacks
diagcab files
memory safety bugs

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

43.8%

An attacker could have triggered a use-after-free condition when creating a WebRTC connection over HTTPS.
Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free.
A website could have obscured the fullscreen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks.
When opening Diagcab files, Firefox did not warn the user that these files may contain malicious code.
Memory safety bugs present in Firefox 114, Firefox ESR 102.12, and Thunderbird 102.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

Affected configurations

Vulners
Node
mozillafirefox_esrRange<102.13
CPENameOperatorVersion
firefox esrlt102.13

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

43.8%