CVE-2018-1000076

Description

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.76% Top 30%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory rubygems.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4219 vendor advisory
https://usn.ubuntu.com/3621-1/ vendor advisory
https://access.redhat.com/errata/RHSA-2018:3729 vendor advisory
https://access.redhat.com/errata/RHSA-2018:3730 vendor advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html mailing list
https://access.redhat.com/errata/RHSA-2018:3731 vendor advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html mailing list
https://www.debian.org/security/2018/dsa-4259 vendor advisory
http://blog.rubygems.org/2018/02/15/2.7.6-released.html vendor advisory
https://github.com/rubygems/rubygems/commit/f5042b879259b1f1ce95a0c5082622c646376693 third party advisory patch
https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html mailing list
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html vendor advisory
https://access.redhat.com/errata/RHSA-2019:2028 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0542 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0591 vendor advisory
https://access.redhat.com/errata/RHSA-2020:0663 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-1000076?
CVE-2018-1000076 has been scored as a critical severity vulnerability.
How to fix CVE-2018-1000076?
To fix CVE-2018-1000076, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1000076 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-1000076 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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