RubyGems up to 2.6.12 Specification Name Validator File input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in RubyGems up to 2.6.12. Affected is an unknown function of the component Specification Name Validator. The manipulation results in input validation (File). This vulnerability is known as CVE-2017-0901. It is possible to launch the attack remotely. Furthermore, an exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in RubyGems up to 2.6.12 (Programming Language Software). Affected is an unknown function of the component Specification Name Validator. The manipulation with an unknown input leads to a input validation vulnerability (File). 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 integrity, and availability. CVE summarizes:

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem.

The bug was discovered 08/29/2017. The weakness was published 08/31/2017 (Website). The advisory is available at blog.rubygems.org. This vulnerability is traded as CVE-2017-0901 since 11/30/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103470 (Debian DLA-1112-1 : rubygems 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 176143 (Debian Security Update for ruby2.3 (DSA 3966-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (42611), Tenable (103470), SecurityFocus (BID 100580†) and CERT Bund (WID-SEC-2026-1421). Similar entries are available at VDB-106032, VDB-106048, VDB-106049 and VDB-106051. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source CentOS
  • Red Hat Enterprise Linux
  • Open Source Ruby
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103470
Nessus Name: Debian DLA-1112-1 : rubygems security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53376
OpenVAS Name: Debian Security Advisory DSA 3966-1 (ruby2.3 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: github.com

Timelineinfo

11/30/2016 🔍
08/29/2017 +272 days 🔍
08/31/2017 +2 days 🔍
08/31/2017 +0 days 🔍
09/01/2017 +1 days 🔍
09/01/2017 +0 days 🔍
09/26/2017 +25 days 🔍
09/27/2017 +1 days 🔍
05/10/2026 +3147 days 🔍

Sourcesinfo

Product: github.com

Advisory: RHSA-2017:3485
Researcher: Yusuke Endoh.
Status: Confirmed

CVE: CVE-2017-0901 (🔍)
GCVE (CVE): GCVE-0-2017-0901
GCVE (VulDB): GCVE-100-106050

OVAL: 🔍

SecurityFocus: 100580 - RubyGems CVE-2017-0901 Local Arbitrary File Overwrite Vulnerability
SecurityTracker: 1039249
CERT Bund: WID-SEC-2026-1421 - Ruby: Mehrere Schwachstellen

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

Entryinfo

Created: 09/01/2017 09:03
Updated: 05/10/2026 11:47
Changes: 09/01/2017 09:03 (71), 11/12/2019 15:23 (14), 01/10/2021 14:44 (2), 01/10/2021 14:50 (1), 12/27/2022 14:24 (4), 12/29/2024 05:34 (16), 05/10/2026 11:47 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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