Critical severity · published Oct 11, 2022
CVE-2022-40138
An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and…
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
An integer conversion error in Hermes bytecode generation, prior to commit 6aa825e480d48127b480b08d13adf70033237097, could have been used to perform Out-Of-Bounds operations and subsequently execute arbitrary code. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
Hermes · Facebook
before commit prior to 6aa825e480d48127b480b08d13adf70033237097 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-40138
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-40138
Patch
https://github.com/facebook/hermes/commit/6aa825e480d48127b480b08d13adf70033237097
Vendor Advisory
https://www.facebook.com/security/advisories/CVE-2022-40138
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