PT-2023-19813 · Facebook · Hermes

Published 2023-05-18 · Updated 2025-01-21 · CVE-2023-24833

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Hermes versions prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80

Description A use-after-free in BigIntPrimitive addition could have been used by an attacker to leak raw data from Hermes VM’s heap. This issue is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Most React Native applications are not affected.

Recommendations For versions prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting the execution of untrusted JavaScript in Hermes to minimize the risk of exploitation.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2023-24833

Affected Products

Hermes

References · 8

• https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 · Patch
• https://osv.dev/vulnerability/CVE-2023-24833 · Vendor Advisory
• https://facebook.com/security/advisories/cve-2023-24833 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-24833 · Security Note
• https://t.me/cvenotify/108142 · Telegram Post
• https://t.me/cvenotify/50774 · Telegram Post
• https://t.me/cvenotify/51245 · Telegram Post
• https://t.me/cibsecurity/64443 · Telegram Post