RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems…

Description

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls.

Scores

EPSS (exploitation in 30 days)

4.8% · top 8.1% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

• CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action (CWE-350) (opens in a new tab)All about CWE-350 and its CVEs
• CWE-346 (opens in a new tab)All about CWE-346 and its CVEs

Affected products

• HackerOne · RubyGems

  • affected Versions before 2.6.13

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• RubyGemsrubygems-updateGHSA-73w7-6w9g-gc8w (opens in a new tab)

References (14)

• USN-3685-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-3553-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• RHSA-2018:0585 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• DSA-3966 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• RHSA-2018:0378 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 1039249 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• RHSA-2017:3485 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• RHSA-2018:0583 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• GLSA-201710-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 100586 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32 (opens in a new tab)x_refsource_MISCx_transferred
• https://hackerone.com/reports/218088 (opens in a new tab)x_refsource_MISCx_transferred
• http://blog.rubygems.org/2017/08/27/2.6.13-released.html (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-73w7-6w9g-gc8w (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2017-0902](https://trackcve.app/badge/CVE-2017-0902.svg)](https://trackcve.app/cve/CVE-2017-0902)

Record last updated 17 Sept 2024, 00:42 UTC.