CVE-2023-5174: Use After Free
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. This bug only affects Firefox on Windows when run in non-standard configurations (such as using runas). Other operating systems are unaffected. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
Other sources
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash.This bug only affects Firefox on Windows when run in non-standard configurations (such as using runas). Other operating systems are unaffected.
— Mozilla
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2023-5174.
What is the severity of CVE-2023-5174?
The severity of CVE-2023-5174 is medium.
Which software is affected by CVE-2023-5174?
Mozilla Firefox ESR 115.3, Mozilla Firefox up to version 118, and Mozilla Thunderbird 115.3 are affected by CVE-2023-5174.
How can CVE-2023-5174 be exploited?
CVE-2023-5174 can be exploited through a use-after-free vulnerability caused by a failure to duplicate a handle during process creation.
Is there a fix available for CVE-2023-5174?
Yes, a fix for CVE-2023-5174 is available. It is recommended to update to Mozilla Firefox ESR 115.3, Mozilla Firefox version 118, or Mozilla Thunderbird 115.3.