Home/CVE/RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force
CVE

CVE-2017-0902

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

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.

HIGH · CVSS 8.1 EPSS 0.04996
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-346Origin Validation Error
CWE-350Reliance on Reverse DNS Resolution for a Security-Critical Action
▤

Affected Products & Versions

9
rubygems<= 2.6.12
debian linuxall versions
canonical ubuntu linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
redhat enterprise linux server eusall versions
redhat enterprise linux server tusall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems rubygems-update HIGH fixed in 2.6.13
⚠

Public Exploits & PoCs

2
pocgithub.com · 8d91516fb7037ecfb27622f605dc40245e0f8d32github.com
pochackerone.com · 218088hackerone.com
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.0 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Aug 2017 · 08:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

7
suse-csafSUSE-SU-2020:1570-1
usnUSN-3685-1
usnUSN-3553-1
rhsaRHSA-2018:0378Low
rhsaRHSA-2018:0585Low
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://blog.rubygems.org/2017/08/27/2.6.13-released.htmlPatchVendor Advisory
http://www.securityfocus.com/bid/100586Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039249Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201710-01Third Party Advisory
https://usn.ubuntu.com/3553-1/Third Party Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin