CVE-2023-5171 - CVE House
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Status published Unknown CVE-2023-5171

During Ion compilation, a Garbage Collection could have resulted in...

Vulnerability Description

During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Lukas Bernhard

References

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Affected Vendor

Affected Software

Firefox, Firefox ESR, Thunderbird
Vulnerable Versions:
unspecified

Timeline

Official Publish: September 27th, 2023
Last Modified: February 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.