VDB-229390 · CVE-2023-25933 · GCVE-0-2023-25933

Facebook Hermes TypedArray type confusion

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Facebook Hermes. The impacted element is an unknown function of the component TypedArray Handler. Executing a manipulation can lead to type confusion. This vulnerability is registered as CVE-2023-25933. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in Facebook Hermes (Social Network Software) (version unknown). It has been declared as problematic. This vulnerability affects an unknown function of the component TypedArray Handler. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A type confusion bug in TypedArray prior to commit e6ed9c1a4b02dc219de1648f44cd808a56171b81 could have been used by a malicious attacker to execute arbitrary code via untrusted JavaScript. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

The weakness was published 05/19/2023. The advisory is available at facebook.com. This vulnerability was named CVE-2023-25933 since 02/16/2023. The technical details are unknown and an exploit is not available.

Applying the patch e6ed9c1a4b02dc219de1648f44cd808a56171b81 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Type

Social Network Software

Vendor

Facebook

Name

Hermes

License

free

Website

Product: https://github.com/facebook/hermes/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Type confusion
CWE: CWE-843
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: e6ed9c1a4b02dc219de1648f44cd808a56171b81

Timelineinfo

02/16/2023 🔍
05/19/2023 +91 days 🔍
05/19/2023 +0 days 🔍
01/21/2025 +613 days 🔍

Sourcesinfo

Product: github.com

Advisory: e6ed9c1a4b02dc219de1648f44cd808a56171b81
Status: Confirmed

CVE: CVE-2023-25933 (🔍)
GCVE (CVE): GCVE-0-2023-25933
GCVE (VulDB): GCVE-100-229390

Entryinfo

Created: 05/19/2023 07:07
Updated: 01/21/2025 23:47
Changes: 05/19/2023 07:07 (40), 06/14/2023 08:29 (1), 06/14/2023 08:34 (11), 01/21/2025 23:47 (26)
Complete: 🔍
Cache ID: 216::103