Critical severity · published Oct 11, 2017
CVE-2017-0903
RubyGems versions between 2.0.0 and 2.6.13 are vulnerable to a possible remote code execution vulnerability
9.8
CVSS
15.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)15.9% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.4; 7.6 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.4; 7.5; 7.6 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.4; 7.6 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
RU
Rubygems · Rubygems
2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +34 more · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 17.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-0903
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-0903
Vendor 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
Third Party Advisory
http://www.securityfocus.com/bid/101275
Third Party Advisory
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
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