Ruby on Rails up to 5.2.4.2/6.0.3.0 fromStrong deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Ruby on Rails up to 5.2.4.2/6.0.3.0. Affected by this issue is some unknown functionality. Executing a manipulation of the argument fromStrong as part of Parameter can lead to deserialization. This vulnerability appears as CVE-2020-8164. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Ruby on Rails up to 5.2.4.2/6.0.3.0 (Programming Language Software). It has been declared as problematic. This vulnerability affects an unknown part. The manipulation of the argument fromStrong as part of a Parameter leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality. CVE summarizes:

A deserialization of untrusted data vulnerability exists in rails < 5.2.4.3, rails < 6.0.3.1 which can allow an attacker to supply information can be inadvertently leaked fromStrong Parameters.

The weakness was presented 06/19/2020 (Website). The advisory is shared for download at groups.google.com. This vulnerability was named CVE-2020-8164 since 01/28/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 257983 (Linux Distros Unpatched Vulnerability : CVE-2020-8164), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.2.4.3 or 6.0.3.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (257983). See VDB-157047 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Deserialization
CWE: CWE-502 / CWE-20
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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Nessus ID: 257983
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-8164

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ruby on Rails 5.2.4.3/6.0.3.1

Timelineinfo

01/28/2020 🔍
06/19/2020 +143 days 🔍
06/20/2020 +1 days 🔍
08/29/2025 +1896 days 🔍

Sourcesinfo

Advisory: groups.google.com
Status: Confirmed

CVE: CVE-2020-8164 (🔍)
GCVE (CVE): GCVE-0-2020-8164
GCVE (VulDB): GCVE-100-157048
See also: 🔍

Entryinfo

Created: 06/20/2020 08:17
Updated: 08/29/2025 07:41
Changes: 06/20/2020 08:17 (40), 06/20/2020 08:22 (18), 08/29/2025 07:41 (21)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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