CVE-2023-37209: Use After Free
First published: Tue Jul 04 2023(Updated: )
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. This vulnerability affects Firefox < 115.
Credit: security@mozilla.org security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/firefox | <115.0-1 | 115.0-1 |
| ubuntu/firefox | <115.0+ | 115.0+ |
| Mozilla Firefox | <115 | 115 |
| Mozilla Firefox | <115.0 | |
| debian/firefox | 123.0-1 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1837993
- https://www.mozilla.org/security/advisories/mfsa2023-22/
- https://security.gentoo.org/glsa/202401-10
- https://launchpad.net/bugs/cve/CVE-2023-37209
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-22/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-37209
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-22/#CVE-2023-37209
- https://ubuntu.com/security/notices/USN-6201-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-37209
- https://security-tracker.debian.org/tracker/CVE-2023-37209
- https://ubuntu.com/security/CVE-2023-37209
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-22/#CVE-2023-37211
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2023-37209?
CVE-2023-37209 is a vulnerability in Firefox that allows for a use-after-free condition to occur, potentially leading to exploitation.
How does CVE-2023-37209 affect Firefox?
CVE-2023-37209 affects Firefox versions up to and including 115.0-1 on Ubuntu and 115.0+ on Ubuntu focal, as well as Debian Firefox version 117.0.1-1.
What is the severity of CVE-2023-37209?
CVE-2023-37209 has a severity level of medium with a score of 4.
How can I fix CVE-2023-37209 in Firefox?
To fix CVE-2023-37209 in Firefox, update to version 115.0 or higher on Ubuntu, version 117.0.1-1 on Debian, or the latest version available for your operating system.
Where can I find more information about CVE-2023-37209?
More information about CVE-2023-37209 can be found in the Mozilla Bugzilla report (https://bugzilla.mozilla.org/show_bug.cgi?id=1837993) and the Mozilla Security Advisories (https://www.mozilla.org/security/advisories/mfsa2023-22/).
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