CVE-2017-0903
CRITICAL severity · CVSS 9.8 · Insecure deserialization
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)16%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/rubygems/rubygems/commit/510b1638ac9bba3ceb7a5d73135dafff9e5bab49 ↗
Additional information
- NVD record
- https://github.com/rubygems/rubygems/commit/510b1638ac9bba3ceb7a5d73135dafff9e5bab49Patch
- http://blog.rubygems.org/2017/10/09/2.6.14-released.htmlAdvisory
- http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.htmlAdvisory
- http://www.securityfocus.com/bid/101275Advisory
- https://access.redhat.com/errata/RHSA-2017:3485Advisory
- https://access.redhat.com/errata/RHSA-2018:0378Advisory
- https://access.redhat.com/errata/RHSA-2018:0583Advisory
- https://access.redhat.com/errata/RHSA-2018:0585Advisory