HIGH8.8

GHSA-76wm-422q-92mq

Code injection in RubyGems

Quick fix

GHSA-76wm-422q-92mq — rubygems-update: upgrade to the fixed version with the command below.

bundle update rubygems-update

Details

An issue was discovered in RubyGems 2.6 and later through 3.0.2. A crafted gem with a multi-line name is not handled correctly. Therefore, an attacker could inject arbitrary code to the stub line of gemspec, which is eval-ed by code in ensure_loadable_spec during the preinstall check.

Are you affected?

Enter the version of the package you're using.

Affected packages

RubyGems/rubygems-update

Introduced in: 2.6.0Fixed in: 2.7.9

Fixbundle update rubygems-update

RubyGems/rubygems-update

Introduced in: 3.0.0Fixed in: 3.0.2

Fixbundle update rubygems-update

References

https://nvd.nist.gov/vuln/detail/CVE-2019-8324[ADVISORY]
https://access.redhat.com/errata/RHSA-2019:1972[WEB]
https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html[WEB]
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8324.yml[WEB]
https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html[WEB]
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html[WEB]