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9.8 Critical

CVE-2023-5174 If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer…

Description

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.

Affected products and versions

Product Affected versions Fixed in
Firefox 118 earliest → < 118 118
Firefox ESR 115.3 earliest → < 115.3 115.3
Thunderbird 115.3 earliest → < 115.3 115.3

References

Timeline

  1. Published
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