CVE-2023-6207
HIGHCVSS 8.8/10EPSS 0.79%
Last modified
CVE-2023-6207 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.
Description
Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 120.0 |
| Mozilla | Firefox Esr | < 115.5.0 |
| Mozilla | Thunderbird | < 115.5 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
| Debian | Debian Linux | 12.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1861344Issue Tracking, Permissions Required
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1861344Issue Tracking, Permissions Required
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-6207?
Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
How severe is CVE-2023-6207?
CVE-2023-6207 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.
How do I fix CVE-2023-6207?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-6207?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST