Ruby up to 2.2.9/2.3.6/2.4.3/2.5.0 RubyGems URL input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Ruby up to 2.2.9/2.3.6/2.4.3/2.5.0. Affected is an unknown function of the component RubyGems. The manipulation results in input validation (URL). This vulnerability is reported as CVE-2018-1000077. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Ruby up to 2.2.9/2.3.6/2.4.3/2.5.0 (Programming Language Software). It has been classified as critical. Affected is an unknown part of the component RubyGems. The manipulation with an unknown input leads to a input validation vulnerability (URL). 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. CVE summarizes:

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.

The bug was discovered 02/15/2018. The weakness was disclosed 03/13/2018 (Website). The advisory is shared for download at blog.rubygems.org. This vulnerability is traded as CVE-2018-1000077 since 02/21/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 108788 (Debian DLA-1337-1 : jruby 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 237072 (Red Hat Update for rh-ruby25-ruby (RHSA-2018:3731)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (108788) and SecurityFocus (BID 103686†). The entries VDB-114428, VDB-114429, VDB-114430 and VDB-114431 are pretty similar. 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: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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

Name: URL
Class: Input validation / URL
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: 108788
Nessus Name: Debian DLA-1337-1 : jruby security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841300
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1337-1] jruby security update)
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: 🔍

Patch: github.com

Timelineinfo

02/15/2018 🔍
02/21/2018 +6 days 🔍
03/13/2018 +20 days 🔍
03/13/2018 +0 days 🔍
03/14/2018 +1 days 🔍
03/28/2018 +14 days 🔍
04/02/2018 +5 days 🔍
04/03/2018 +1 days 🔍
02/21/2023 +1785 days 🔍

Sourcesinfo

Advisory: RHSA-2018:3729
Status: Confirmed

CVE: CVE-2018-1000077 (🔍)
GCVE (CVE): GCVE-0-2018-1000077
GCVE (VulDB): GCVE-100-114432

OVAL: 🔍

SecurityFocus: 103686 - Ruby CVE-2018-6914 Directory Traversal Vulnerability

See also: 🔍

Entryinfo

Created: 03/14/2018 07:45
Updated: 02/21/2023 14:27
Changes: 03/14/2018 07:45 (76), 01/13/2020 07:09 (5), 02/21/2023 14:27 (5)
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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