Home/CVE/RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potenti
CVE

CVE-2017-0901

RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potenti

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.

HIGH · CVSS 7.5 EPSS 0.20215
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 4% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

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

3
localRubyGems < 2.6.13 - Arbitrary File Overwriteverified
pochackerone.com · 243156hackerone.com
pocwww.exploit-db.com · 42611www.exploit-db.com
▣

Scoring & Timeline

7.5
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:L/PR:N/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

8
suse-csafSUSE-SU-2020:1570-1
usnUSN-3685-1
usnUSN-3553-1
rhsaRHSA-2018:0378Low
rhsaRHSA-2018:0585Low
🔗

References & Sources

9
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/100580Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039249Third Party AdvisoryVDB Entry
https://github.com/rubygems/rubygems/commit/ad5c0a53a86ca5b218c7976765c0365b91d22cb2PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201710-01Third Party Advisory
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