CVE-2023-24833
High
Description
A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by an attacker to leak raw data from Hermes VM’s heap. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Facebook Hermes
PublishedMay 18, 2023
First seenMay 18, 2023
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- facebook hermes2023-02-02 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hermes | v < 2023-02-02 | 2023-02-02 |
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