CVE-2020-1914

A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.facebook.com/security/advisories/cve-2020-1914	Vendor Advisory
https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*

Information

Published : 2020-10-08 12:15

Updated : 2020-10-20 11:28

NVD link : CVE-2020-1914

Mitre link : CVE-2020-1914

JSON object : View

CWE

CWE-670

Always-Incorrect Control Flow Implementation

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Products Affected

facebook

hermes

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