Facebook Hermes Javascript Interpreter signed conversion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Facebook Hermes. Affected by this issue is some unknown functionality of the component Javascript Interpreter. Performing a manipulation results in signed conversion. This vulnerability is known as CVE-2020-1913. Remote exploitation of the attack is possible. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Facebook Hermes (Social Network Software) (affected version unknown). This affects an unknown functionality of the component Javascript Interpreter. The manipulation with an unknown input leads to a signed conversion vulnerability. CWE is classifying the issue as CWE-195. The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An Integer signedness error in the JavaScript Interpreter in Facebook Hermes prior to commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 allows attackers to cause a denial of service attack or a potential RCE 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.

The weakness was published 09/09/2020 (GitHub Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2020-1913 since 12/02/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Applying the patch 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 is able to eliminate this problem.

Similar entry is available at VDB-161084. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Signed conversion
CWE: CWE-195 / CWE-194 / CWE-189
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: 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6

Timelineinfo

12/02/2019 🔍
09/09/2020 +282 days 🔍
09/10/2020 +1 days 🔍
09/10/2020 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined

CVE: CVE-2020-1913 (🔍)
GCVE (CVE): GCVE-0-2020-1913
GCVE (VulDB): GCVE-100-161085
See also: 🔍

Entryinfo

Created: 09/10/2020 07:42
Updated: 09/10/2020 07:47
Changes: 09/10/2020 07:42 (40), 09/10/2020 07:47 (18)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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