CVE-2017-0902

high-risk
Published 2017-08-31

RubyGems version 2.6.12 and earlier 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.

Do I need to act?

~
5.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.1/10 High
NETWORK / HIGH complexity

Affected Products (16)

Rubygems

Affected Vendors

Rubygems Canonical Debian Redhat

References (28)

Patch http://blog.rubygems.org/2017/08/27/2.6.13-released.html
Third Party Advisory http://www.securityfocus.com/bid/100586
Third Party Advisory http://www.securitytracker.com/id/1039249
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
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:0585
Exploit https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f...
Exploit https://hackerone.com/reports/218088
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Third Party Advisory https://security.gentoo.org/glsa/201710-01
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-3966
Patch http://blog.rubygems.org/2017/08/27/2.6.13-released.html
Third Party Advisory http://www.securityfocus.com/bid/100586
Third Party Advisory http://www.securitytracker.com/id/1039249
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
and 8 more references
50
/ 100
high-risk
Severity 24/34 · High
Exploitability 8/34 · Low
Exposure 18/34 · Moderate