Facebook Hermes Bytecode Generation use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Facebook Hermes. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Bytecode Generation. Performing a manipulation results in use after free. This vulnerability was named CVE-2023-30470. The attack may be initiated remotely. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Facebook Hermes (Social Network Software) (version unknown). This affects an unknown function of the component Bytecode Generation. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free related to unsound inference in the bytecode generation when optimizations are enabled for Hermes prior to commit da8990f737ebb9d9810633502f65ed462b819c09 could have been used by an attacker to achieve remote code execution. 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 presented 05/19/2023. It is possible to read the advisory at facebook.com. This vulnerability is uniquely identified as CVE-2023-30470 since 04/11/2023. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/21/2025).

Applying the patch da8990f737ebb9d9810633502f65ed462b819c09 is able to eliminate this problem. The bugfix is ready for download at github.com.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: da8990f737ebb9d9810633502f65ed462b819c09

Timelineinfo

04/11/2023 🔍
05/19/2023 +38 days 🔍
05/19/2023 +0 days 🔍
01/21/2025 +613 days 🔍

Sourcesinfo

Product: github.com

Advisory: da8990f737ebb9d9810633502f65ed462b819c09
Status: Confirmed

CVE: CVE-2023-30470 (🔍)
GCVE (CVE): GCVE-0-2023-30470
GCVE (VulDB): GCVE-100-229383

Entryinfo

Created: 05/19/2023 07:00
Updated: 01/21/2025 23:57
Changes: 05/19/2023 07:00 (40), 06/14/2023 07:38 (1), 06/14/2023 07:44 (11), 01/21/2025 23:57 (26)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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