Ruby on Rails up to 1.7.6 JSON Gem input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.09

Summaryinfo

A vulnerability marked as critical has been reported in Ruby on Rails up to 1.7.6. Impacted is an unknown function of the component JSON Gem. Performing a manipulation results in input validation. This vulnerability was named CVE-2013-0269. In addition, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Ruby on Rails up to 1.7.6 (Programming Language Software). It has been classified as critical. This affects an unknown code of the component JSON Gem. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The JSON gem before 1.5.5, 1.6.x before 1.6.8, and 1.7.x before 1.7.7 for Ruby allows remote attackers to cause a denial of service (resource consumption) or bypass the mass assignment protection mechanism via a crafted JSON document that triggers the creation of arbitrary Ruby symbols or certain internal objects, as demonstrated by conducting a SQL injection attack against Ruby on Rails, aka "Unsafe Object Creation Vulnerability."

The weakness was presented 02/11/2013 by Thomas Hollstegge and Ben Murphy with Zweitag as confirmed mailinglist post (oss-sec mailing list). It is possible to read the advisory at seclists.org. The public release was coordinated in cooperation with the project team. This vulnerability is uniquely identified as CVE-2013-0269 since 12/06/2012. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Ruby and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 74955 (openSUSE Security Update : ruby (openSUSE-SU-2013:0603-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166127 (SUSE Security Update for Ruby (openSUSE-SU-2013:0603-1)).

Upgrading to version 1.7.7 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82010), Tenable (74955), SecurityFocus (BID 57899†), OSVDB (90074†) and Secunia (SA52075†). See VDB-7681, VDB-7682 and VDB-10949 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 8.6
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74955
Nessus Name: openSUSE Security Update : ruby (openSUSE-SU-2013:0603-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 865436
OpenVAS Name: Fedora Update for rubygem-json FEDORA-2013-3050
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Ruby on Rails 1.7.7

Timelineinfo

12/06/2012 🔍
02/11/2013 +67 days 🔍
02/11/2013 +0 days 🔍
02/11/2013 +0 days 🔍
02/11/2013 +0 days 🔍
02/12/2013 +1 days 🔍
02/12/2013 +0 days 🔍
02/13/2013 +1 days 🔍
06/13/2014 +485 days 🔍
04/29/2019 +1781 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Thomas Hollstegge, Ben Murphy
Organization: Zweitag
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0269 (🔍)
GCVE (CVE): GCVE-0-2013-0269
GCVE (VulDB): GCVE-100-7683

OVAL: 🔍

X-Force: 82010 - json gem for Ruby security bypass, Medium Risk
SecurityFocus: 57899 - JSON Denial of Service and Security Bypass Vulnerabilities
Secunia: 52075 - Ruby json Gem Document Parsing Vulnerability, Moderately Critical
OSVDB: 90074

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/13/2013 10:36
Updated: 04/29/2019 12:30
Changes: 02/13/2013 10:36 (87), 04/29/2019 12:30 (2)
Complete: 🔍
Committer:
Cache ID: 216:DBE:103

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