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AUSCERT External Security Bulletin Redistribution
ESB-2023.3804
MFSA 2023-22 Security Vulnerabilities fixed in Firefox 115
5 July 2023
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AusCERT Security Bulletin Summary
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Product: Firefox
Publisher: Mozilla
Operating System: Windows
Linux variants
macOS
Resolution: Patch/Upgrade
CVE Names: CVE-2023-37212 CVE-2023-37211 CVE-2023-37210
CVE-2023-37209 CVE-2023-37208 CVE-2023-37207
CVE-2023-37206 CVE-2023-37205 CVE-2023-37204
CVE-2023-37203 CVE-2023-37202 CVE-2023-37201
CVE-2023-3482
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2023-22/
Comment: CVSS (Max): None available when published
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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
o Bug 1839464
# 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
o Bug 1826002
# 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
o Bug 1834711
# CVE-2023-37203: Drag and Drop API may provide access to local system files
Reporter: Paul Nickerson
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
o Bug 291640
# 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
o Bug 1832195
# 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
o Bug 1704420
# 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
o Bug 1813299
# 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
o Bug 1816287
# CVE-2023-37208: Lack of warning when opening Diagcab files
Reporter: Puf
Impact: moderate
Description
When opening Diagcab files, Firefox did not warn the user that these files may
contain malicious code.
References
o Bug 1837675
# 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
o Bug 1837993
# 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
o Bug 1821886
# 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
o Memory safety bugs fixed in Firefox 115, Firefox ESR 102.13, and
Thunderbird 102.13
# 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
o Memory safety bugs fixed in Firefox 115
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