Mozilla Foundation Security Advisory 2023-01

Security Vulnerabilities fixed in Firefox 109

Announced
January 17, 2023
Impact
high
Products
Firefox
Fixed in
  • Firefox 109

#CVE-2023-23597: Logic bug in process allocation allowed to read arbitrary files

Reporter
Niklas Baumstark
Impact
high
Description

A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the file:// context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read.

References

#CVE-2023-23598: Arbitrary file read from GTK drag and drop on Linux

Reporter
Tom Schuster
Impact
high
Description

Due to the Firefox GTK wrapper code's use of text/plain for drag data and GTK treating all text/plain MIMEs containing file URLs as being dragged a website could arbitrarily read a file via a call to DataTransfer.setData.

References

#CVE-2023-23599: Malicious command could be hidden in devtools output on Windows

Reporter
Vadim
Impact
moderate
Description

When copying a network request from the developer tools panel as a curl command the output was not being properly sanitized and could allow arbitrary commands to be hidden within.

References

#CVE-2023-23600: Notification permissions persisted between Normal and Private Browsing on Android

Reporter
Kazuki Nomoto of Waseda University
Impact
moderate
Description

Per origin notification permissions were being stored in a way that didn't take into account what browsing context the permission was granted in. This lead to the possibility of notifications to be displayed during different browsing sessions.
This bug only affects Firefox for Android. Other operating systems are unaffected.

References

#CVE-2023-23601: URL being dragged from cross-origin iframe into same tab triggers navigation

Reporter
Luan Herrera
Impact
moderate
Description

Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks

References

#CVE-2023-23602: Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers

Reporter
Dave Vandyke
Impact
moderate
Description

A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers.

References

#CVE-2023-23603: Calls to <code>console.log</code> allowed bypasing Content Security Policy via format directive

Reporter
Dan Veditz
Impact
low
Description

Regular expressions used to filter out forbidden properties and values from style directives in calls to console.log weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser.

References

#CVE-2023-23604: Creation of duplicate <code>SystemPrincipal</code> from less secure contexts

Reporter
Nika Layzell
Impact
low
Description

A duplicate SystemPrincipal object could be created when parsing a non-system html document via DOMParser::ParseFromSafeString. This could have lead to bypassing web security checks.

References

#CVE-2023-23605: Memory safety bugs fixed in Firefox 109 and Firefox ESR 102.7

Reporter
Mozilla developers
Impact
high
Description

Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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-2023-23606: Memory safety bugs fixed in Firefox 109

Reporter
Mozilla developers
Impact
high
Description

Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108. 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