Ruby on Rails up to 5.2.2.0/6.0.0.beta2 Development Mode input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Ruby on Rails up to 5.2.2.0/6.0.0.beta2. This vulnerability affects unknown code of the component Development Mode. This manipulation causes input validation. This vulnerability appears as CVE-2019-5420. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Ruby on Rails up to 5.2.2.0/6.0.0.beta2 (Programming Language Software). Affected by this vulnerability is an unknown functionality of the component Development Mode. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.

The bug was discovered 03/13/2019. The weakness was presented 03/27/2019 (Website). The advisory is shared at groups.google.com. This vulnerability is known as CVE-2019-5420 since 01/04/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by ooooooo_q/mpgn/sinn3r in Ruby/Metasploit and been published even before and not after the advisory. It is possible to download the exploit at github.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13442 (Ruby on Rails Multiple Security Vulnerabilities).

Upgrading to version 5.2.2.1 or 6.0.0.beta3 eliminates this vulnerability.

See VDB-132551 and VDB-132552 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: ooooooo_q/mpgn/sinn3r
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: exploit/multi/http/rails_double_tap
MetaSploit Name: Ruby On Rails DoubleTap Development Mode secret_key_base Vulnerability

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ruby on Rails 5.2.2.1/6.0.0.beta3

Timelineinfo

01/04/2019 🔍
03/13/2019 +67 days 🔍
03/13/2019 +0 days 🔍
03/27/2019 +14 days 🔍
03/28/2019 +1 days 🔍
12/30/2024 +2104 days 🔍

Sourcesinfo

Advisory: 152704
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-5420 (🔍)
GCVE (CVE): GCVE-0-2019-5420
GCVE (VulDB): GCVE-100-132553
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/28/2019 14:21
Updated: 12/30/2024 22:22
Changes: 03/28/2019 14:21 (60), 05/22/2020 14:46 (2), 08/17/2023 12:05 (5), 08/17/2023 12:13 (1), 08/25/2024 11:45 (1), 08/25/2024 11:46 (7), 08/25/2024 11:49 (15), 12/30/2024 22:22 (6)
Complete: 🔍
Committer: misc
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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