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Vulnerability details: VCID-jmzh-89dm-r7g2
Vulnerability ID VCID-jmzh-89dm-r7g2
Aliases CVE-2017-0902
GHSA-73w7-6w9g-gc8w
Summary Origin Validation Error RubyGems 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-346 Origin Validation Error
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-350 Reliance on Reverse DNS Resolution for a Security-Critical Action
CWE-138 Improper Neutralization of Special Elements
System Score Found at
cvssv3.1 8.1 http://blog.rubygems.org/2017/08/27/2.6.13-released.html
generic_textual HIGH http://blog.rubygems.org/2017/08/27/2.6.13-released.html
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2017:3485
generic_textual HIGH https://access.redhat.com/errata/RHSA-2017:3485
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2018:0378
generic_textual HIGH https://access.redhat.com/errata/RHSA-2018:0378
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2018:0583
generic_textual HIGH https://access.redhat.com/errata/RHSA-2018:0583
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2018:0585
generic_textual HIGH https://access.redhat.com/errata/RHSA-2018:0585
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-0902.json
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
epss 0.05207 https://api.first.org/data/v1/epss?cve=CVE-2017-0902
cvssv3 8.1 https://blog.rubygems.org/2017/08/27/2.6.13-released.html
cvssv2 7.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-73w7-6w9g-gc8w
cvssv3.1 8.1 https://github.com/rubygems/rubygems
generic_textual HIGH https://github.com/rubygems/rubygems
cvssv3.1 8.1 https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
generic_textual HIGH https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
cvssv3.1 8.1 https://hackerone.com/reports/218088
generic_textual HIGH https://hackerone.com/reports/218088
cvssv3.1 8.1 https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2017-0902
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2017-0902
cvssv3.1 8.1 https://security.gentoo.org/glsa/201710-01
generic_textual HIGH https://security.gentoo.org/glsa/201710-01
cvssv3.1 8.1 https://usn.ubuntu.com/3553-1
generic_textual HIGH https://usn.ubuntu.com/3553-1
cvssv3.1 8.1 https://usn.ubuntu.com/3685-1
generic_textual HIGH https://usn.ubuntu.com/3685-1
cvssv3.1 8.1 https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586
generic_textual HIGH https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586
cvssv3.1 8.1 https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249
generic_textual HIGH https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249
cvssv3.1 8.1 https://www.debian.org/security/2017/dsa-3966
generic_textual HIGH https://www.debian.org/security/2017/dsa-3966
Reference id Reference type URL
http://blog.rubygems.org/2017/08/27/2.6.13-released.html
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://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-0902.json
https://api.first.org/data/v1/epss?cve=CVE-2017-0902
https://blog.rubygems.org/2017/08/27/2.6.13-released.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-9096
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0899
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0900
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0901
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0902
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14064
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/rubygems/rubygems
https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
https://hackerone.com/reports/218088
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://usn.ubuntu.com/3553-1
https://usn.ubuntu.com/3553-1/
https://usn.ubuntu.com/3685-1
https://usn.ubuntu.com/3685-1/
https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586
https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249
https://www.debian.org/security/2017/dsa-3966
http://www.securityfocus.com/bid/100586
http://www.securitytracker.com/id/1039249
1487589 https://bugzilla.redhat.com/show_bug.cgi?id=1487589
CVE-2017-0902 https://nvd.nist.gov/vuln/detail/CVE-2017-0902
GHSA-73w7-6w9g-gc8w https://github.com/advisories/GHSA-73w7-6w9g-gc8w
GLSA-201710-01 https://security.gentoo.org/glsa/201710-01
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://blog.rubygems.org/2017/08/27/2.6.13-released.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/errata/RHSA-2017:3485
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/errata/RHSA-2018:0378
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/errata/RHSA-2018:0583
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/errata/RHSA-2018:0585
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-0902.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/rubygems/rubygems
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://hackerone.com/reports/218088
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-0902
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://security.gentoo.org/glsa/201710-01
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://usn.ubuntu.com/3553-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://usn.ubuntu.com/3685-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.debian.org/security/2017/dsa-3966
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.89894
EPSS Score 0.05207
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:19.247378+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/gem/rubygems-update/CVE-2017-0902.yml 38.0.0