CVE-2023-4576: Buffer Overflow
First published: Tue Aug 29 2023(Updated: )
On Windows, an integer overflow could occur in `RecordedSourceSurfaceCreation` which resulted in a heap buffer overflow potentially leaking sensitive data that could have led to a sandbox escape. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.
Credit: security@mozilla.org security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Thunderbird | <102.15 | 102.15 |
| Mozilla Firefox ESR | <115.2 | 115.2 |
| Mozilla Thunderbird | <115.2 | 115.2 |
| Mozilla Firefox ESR | <102.15 | 102.15 |
| Mozilla Firefox | <117 | 117 |
| Mozilla Firefox | <117.0 | |
| Mozilla Firefox ESR | <102.15 | |
| Mozilla Firefox ESR | >=115.0<115.2 | |
| Mozilla Thunderbird | <115.2 | |
| Microsoft Windows | ||
| All of | ||
| Any of | ||
| Mozilla Firefox | <117.0 | |
| Mozilla Firefox | >=115.0<115.2 | |
| Mozilla Firefox ESR | <102.15 | |
| Mozilla Thunderbird | <115.2 | |
| Microsoft Windows |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1846694
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-34/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-35/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-36/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-37/
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-38/
- https://www.mozilla.org/security/advisories/mfsa2023-34/
- https://www.mozilla.org/security/advisories/mfsa2023-35/
- https://www.mozilla.org/security/advisories/mfsa2023-36/
- https://www.mozilla.org/security/advisories/mfsa2023-37/
- https://www.mozilla.org/security/advisories/mfsa2023-38/
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2023-4576?
CVE-2023-4576 is a vulnerability in Mozilla Firefox and Thunderbird on Windows that allows an integer overflow, resulting in a heap buffer overflow and potential data leakage that could lead to a sandbox escape.
Which operating systems are affected by CVE-2023-4576?
This vulnerability only affects Firefox and Thunderbird on Windows. Other operating systems are unaffected.
What is the severity of CVE-2023-4576?
CVE-2023-4576 has a severity score of 8.6 (high).
How can I fix CVE-2023-4576?
To fix CVE-2023-4576, users should update Mozilla Firefox or Thunderbird to the recommended versions provided by Mozilla.
Where can I find more information about CVE-2023-4576?
You can find more information about CVE-2023-4576 on the Mozilla website and the bugzilla.mozilla.org website.
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