High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-0902
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:50 UTC · Revision 1
Source evidence
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.
osv:CVE-2017-0902
Complete source record
{
"id": "8a5a6b353ce5659796f1b2cb03aeb637e23f2af99d6d3e320bd89549c15ddab5",
"url": "https://osv.dev/vulnerability/CVE-2017-0902",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-0902",
"summary": "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.",
"evidence": "osv:CVE-2017-0902",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-0902",
"aliases": [
"CVE-2017-0902",
"GHSA-73w7-6w9g-gc8w"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/ruby/rubygems",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "009080040279282d7b8ddd09acab41719cb4ba00"
},
{
"fixed": "8d91516fb7037ecfb27622f605dc40245e0f8d32"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.6.12"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "8d91516fb7037ecfb27622f605dc40245e0f8d32"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v2.6.12",
"v2.6.11",
"v2.6.7",
"v2.6.10",
"v2.6.9",
"v2.6.8",
"v2.6.6",
"v2.6.5",
"v2.6.3",
"v2.6.4",
"v2.6.2",
"v2.6.1",
"v2.6.0",
"v2.5.2",
"v2.5.1",
"v2.5.0",
"v2.4.6",
"v2.4.5",
"v2.4.4",
"v2.4.3",
"v2.4.2",
"v2.4.1",
"v2.4.0",
"v2.3.0",
"v2.2.1",
"v2.2.0.rc.1",
"v2.2.0.preview.1",
"v2.1.3",
"v2.1.2",
"v2.1.1",
"v2.1.0",
"v2.1.0.rc.2",
"v2.1.0.rc.1",
"v2.0.3",
"v2.0.2",
"v2.0.1",
"v2.0.0",
"v2.0.0.rc.2",
"v2.0.0.rc.1",
"v2.0.0.preview2.2",
"v2.0.0.preview2.1",
"v2.0.0.preview2",
"v1.8.2",
"v1.8.1",
"v1.8.0",
"v1.7.1",
"v1.7.0",
"v1.6.2",
"v1.6.1",
"v1.6.0",
"v1.5.2",
"v1.5.1",
"v1.5.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-0902.json"
}
}
],
"modified": "2026-10-20T10:48:06.155120616Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2017:3485",
"https://access.redhat.com/errata/RHSA-2018:0378",
"https://access.redhat.com/errata/RHSA-2018:0583",
"https://access.redhat.com/errata/RHSA-2018:0585",
"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html",
"https://security.gentoo.org/glsa/201710-01",
"https://usn.ubuntu.com/3553-1/",
"https://usn.ubuntu.com/3685-1/",
"https://www.debian.org/security/2017/dsa-3966",
"https://hackerone.com/reports/218088",
"https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "17.10"
},
{
"last_affected": "17.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_eus",
"extracted_events": [
{
"range": [
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
},
{
"introduced": "7.5"
},
{
"last_affected": "7.5"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_tus",
"extracted_events": [
{
"range": [
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-0902",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 380036,
"published_at": "2017-08-31T20:29:00.603+00:00"
}