Ruby prior 1.8.7-p299 input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Ruby 1.8.7-p299/1.8.7-p302/1.8.7-p330/1.8.7-p334/1.8.7-p352. This affects an unknown function. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2011-4815. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Ruby 1.8.7-p299/1.8.7-p302/1.8.7-p330/1.8.7-p334/1.8.7-p352 (Programming Language Software). It has been declared as critical. This vulnerability affects an unknown code block. 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 availability. CVE summarizes:

Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

The weakness was presented 12/29/2011 by Alexander Klink with n.runs AG as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability was named CVE-2011-4815 since 12/14/2011. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 68440 (Oracle Linux 6 : ruby (ELSA-2012-0069)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120902 (Solaris 11 Support Repository Update (SRU) 6.6 Missing).

Upgrading to version 1.8.7-p299 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11994.

The vulnerability is also documented in the databases at X-Force (72020), Tenable (68440), SecurityFocus (BID 51198†), Secunia (SA47822†) and SecurityTracker (ID 1026474†). See VDB-4549, VDB-4791, VDB-5404 and VDB-5409 for similar entries. Once again VulDB remains the best source 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: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68440
Nessus Name: Oracle Linux 6 : ruby (ELSA-2012-0069)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70754
OpenVAS Name: FreeBSD Ports: jruby
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Ruby 1.8.7-p299
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

12/14/2011 🔍
12/29/2011 +15 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
01/17/2012 +19 days 🔍
01/31/2012 +14 days 🔍
07/12/2013 +528 days 🔍
03/23/2015 +619 days 🔍
12/03/2024 +3543 days 🔍

Sourcesinfo

Advisory: RHSA-2012:0069
Researcher: Alexander Klink
Organization: n.runs AG
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-4815 (🔍)
GCVE (CVE): GCVE-0-2011-4815
GCVE (VulDB): GCVE-100-59848

OVAL: 🔍

CERT: 🔍
X-Force: 72020
SecurityFocus: 51198 - Ruby Hash Collision Denial Of Service Vulnerability
Secunia: 47822 - Red Hat update for ruby, Less Critical
SecurityTracker: 1026474 - Ruby Hash Table Collision Bug Lets Remote Users Deny Service
Vulnerability Center: 34236 - Ruby (aka CRuby) Before 1.8.7-p357 Hash Collision Allows Remote DoS Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/03/2024 11:16
Changes: 03/23/2015 16:50 (67), 04/09/2017 13:26 (21), 11/28/2021 14:59 (3), 11/28/2021 15:02 (1), 12/03/2024 11:16 (15)
Complete: 🔍
Cache ID: 216:632:103

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