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CVE-2017-0903
CRITICAL
RubyGems versions between 2.0.0 and 2.6.13 are vulnerable to a possible remote code execution vulnerability. YAML deserialization of gem specifications can bypass class white lists. Specially crafted serialized objects can possibly be used to escalate to remote code execution.
Published: Oct 11, 2017
Modified: Jun 17, 2026
CWE-502
CWE-502
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (87)
| Vendor | Product | Version |
|---|---|---|
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.0 |
| rubygems | rubygems | 2.0.1 |
| rubygems | rubygems | 2.0.2 |
| rubygems | rubygems | 2.0.3 |
| rubygems | rubygems | 2.0.4 |
| rubygems | rubygems | 2.0.5 |
| rubygems | rubygems | 2.0.6 |
| rubygems | rubygems | 2.0.7 |
| rubygems | rubygems | 2.0.8 |
| rubygems | rubygems | 2.0.9 |
| rubygems | rubygems | 2.0.10 |
| rubygems | rubygems | 2.0.11 |
| rubygems | rubygems | 2.0.12 |
| rubygems | rubygems | 2.0.13 |
| rubygems | rubygems | 2.0.14 |
…and 67 more
GitHub Security Advisory GHSA-mqwr-4qf2-2hcv
RubyGems vulnerable to Deserialization of Untrusted Data
rubygems
rubygems-update
>= 2.0.0, < 2.6.14
Fixed: 2.6.14
References (26)
- http://blog.rubygems.org/2017/10/09/2.6.14-released.html Vendor Advisory
- http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.html Vendor Advisory
- http://www.securityfocus.com/bid/101275 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:3485 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0378 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0583 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0585 Third Party Advisory
- https://github.com/rubygems/rubygems/commit/510b1638ac9bba3ceb7a5d73135dafff9e5bab49 Patch, Third Party Advisory
- https://hackerone.com/reports/274990 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3553-1/ Third Party Advisory
- https://usn.ubuntu.com/3685-1/ Third Party Advisory
- https://www.debian.org/security/2017/dsa-4031 Third Party Advisory
- http://blog.rubygems.org/2017/10/09/2.6.14-released.html Vendor Advisory
- http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.html Vendor Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
15.85%
Top 3% most likely to be exploited
Threat Score
44 / 100
Data Sources
NVD
EPSS
GitHub