Ruby up to 2.1.7 Library DL::dlopen input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Ruby up to 2.1.7. This vulnerability affects the function DL::dlopen of the component Library Handler. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2009-5147. Local access is required to approach this attack. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Ruby up to 2.1.7 (Programming Language Software). This issue affects the function DL::dlopen of the component Library Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names.

The bug was discovered 07/28/2015. The weakness was disclosed 03/30/2017 as not defined mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2009-5147 since 07/28/2015. The exploitation is known to be difficult. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 85654 (Debian DLA-299-1 : ruby1.8 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196859 (Ubuntu Security Notification for Ruby1.9.1, Ruby2.0, Ruby2.3 Vulnerabilities (USN-3365-1)).

Upgrading to version 2.1.8 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (85654) and SecurityFocus (BID 76060†). The entries VDB-81478, VDB-95056, VDB-96308 and VDB-102247 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.3
NVD Vector: 🔍

CVSSv2info

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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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 85654
Nessus Name: Debian DLA-299-1 : ruby1.8 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for ruby2.3 USN-3365-1
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 2.1.8
Patch: github.com

Timelineinfo

07/28/2015 🔍
07/28/2015 +0 days 🔍
07/28/2015 +0 days 🔍
08/26/2015 +29 days 🔍
08/27/2015 +1 days 🔍
03/29/2017 +580 days 🔍
03/30/2017 +1 days 🔍
03/30/2017 +0 days 🔍
11/24/2022 +2065 days 🔍

Sourcesinfo

Product: github.com

Advisory: RHSA-2018:0583
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-5147 (🔍)
GCVE (CVE): GCVE-0-2009-5147
GCVE (VulDB): GCVE-100-99047
SecurityFocus: 76060 - Ruby 'dl/handle.c' Security Bypass Vulnerability
OSVDB: - CVE-2009-5147 - Ruby - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 03/30/2017 09:20
Updated: 11/24/2022 08:23
Changes: 03/30/2017 09:20 (77), 08/23/2020 21:37 (5), 11/24/2022 08:23 (5)
Complete: 🔍
Cache ID: 216::103

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