Ruby up to 2.2.9/2.3.6/2.4.3/2.5.0 RubyGems cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Ruby up to 2.2.9/2.3.6/2.4.3/2.5.0. Affected by this vulnerability is an unknown functionality of the component RubyGems. This manipulation causes cross site scripting. This vulnerability appears as CVE-2018-1000078. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

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 declared as problematic. Affected by this vulnerability is an unknown code of the component RubyGems. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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 Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6.

The bug was discovered 02/15/2018. The weakness was presented 03/13/2018 (Website). The advisory is shared at blog.rubygems.org. This vulnerability is known as CVE-2018-1000078 since 02/21/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

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†). See VDB-114428, VDB-114429, VDB-114430 and VDB-114431 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: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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-2018-1000078 (🔍)
GCVE (CVE): GCVE-0-2018-1000078
GCVE (VulDB): GCVE-100-114433

OVAL: 🔍

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

See also: 🔍

Entryinfo

Created: 03/14/2018 07:46
Updated: 02/21/2023 14:31
Changes: 03/14/2018 07:46 (75), 01/13/2020 07:20 (5), 02/21/2023 14:31 (5)
Complete: 🔍
Cache ID: 216::103

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

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