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Mozilla Foundation Security Advisory 2023-22

Security Vulnerabilities fixed in Firefox 115

Announced
July 4, 2023
Impact
high
Products
Firefox
Fixed in
  • Firefox 115

#CVE-2023-3482: Block all cookies bypass for localstorage

Reporter
Martin Hostettler
Impact
moderate
Description

When Firefox is configured to block storage of all cookies, it was still possible to store data in localstorage by using an iframe with a source of 'about:blank'. This could have led to malicious websites storing tracking data without permission.

References

#CVE-2023-37201: Use-after-free in WebRTC certificate generation

Reporter
Irvan Kurniawan
Impact
high
Description

An attacker could have triggered a use-after-free condition when creating a WebRTC connection over HTTPS.

References

#CVE-2023-37202: Potential use-after-free from compartment mismatch in SpiderMonkey

Reporter
zx
Impact
high
Description

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.

References

#CVE-2023-37203: Drag and Drop API may provide access to local system files

Reporter
Paul Nickerson and Ameen Basha M K
Impact
moderate
Description

Insufficient validation in the Drag and Drop API in conjunction with social engineering, may have allowed an attacker to trick end-users into creating a shortcut to local system files. This could have been leveraged to execute arbitrary code.

References

#CVE-2023-37204: Fullscreen notification obscured via option element

Reporter
Irvan Kurniawan
Impact
moderate
Description

A website could have obscured the fullscreen notification by using an option element by introducing lag via an expensive computational function. This could have led to user confusion and possible spoofing attacks.

References

#CVE-2023-37205: URL spoofing in address bar using RTL characters

Reporter
Rohan Sharma
Impact
moderate
Description

The use of RTL Arabic characters in the address bar may have allowed for URL spoofing.

References

#CVE-2023-37206: Insufficient validation of symlinks in the FileSystem API

Reporter
Ameen Basha M K
Impact
moderate
Description

Uploading files which contain symlinks may have allowed an attacker to trick a user into submitting sensitive data to a malicious website.

References

#CVE-2023-37207: Fullscreen notification obscured

Reporter
Shaheen Fazim
Impact
moderate
Description

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.

References

#CVE-2023-37208: Lack of warning when opening Diagcab files

Reporter
P Umar Farooq
Impact
moderate
Description

When opening Diagcab files, Firefox did not warn the user that these files may contain malicious code.

References

#CVE-2023-37209: Use-after-free in "NotifyOnHistoryReload"

Reporter
Simon Descarpentries
Impact
moderate
Description

A use-after-free condition existed in NotifyOnHistoryReload where a LoadingSessionHistoryEntry object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused.

References

#CVE-2023-37210: Full-screen mode exit prevention

Reporter
Hafiizh
Impact
low
Description

A website could prevent a user from exiting full-screen mode via alert and prompt calls. This could lead to user confusion and possible spoofing attacks.

References

#CVE-2023-37211: Memory safety bugs fixed in Firefox 115, Firefox ESR 102.13, and Thunderbird 102.13

Reporter
Andrew McCreight, Matthew Gaudet, Tom Ritter, and the Mozilla Fuzzing Team,
Impact
high
Description

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.

References

#CVE-2023-37212: Memory safety bugs fixed in Firefox 115

Reporter
Andrew McCreight, and the Mozilla Fuzzing Team
Impact
high
Description

Memory safety bugs present in Firefox 114. 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.

References