CVE-2019-8324 Code injection in RubyGems
High 8.8
Published
Updated
Check this codebase for CVE-2019-8324 and fix it if it is affected.
What it is: CVE-2019-8324 is a high-severity code injection vulnerability in Debian Debian Linux, published on 17 Jun 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-8324 in the wild and no public exploit code.
Affected packages and fixed versions:
- rubygems-update (RubyGems): affected from 2.6.0; fixed in 2.7.9
- rubygems-update (RubyGems): affected from 2.6.0; fixed in 2.7.9
- rubygems-update (RubyGems): affected from 3.0.0; fixed in 3.0.2
- rubygems-update (RubyGems): affected from 3.0.0; fixed in 3.0.2
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2019-8324/ (Markdown: https://insights.sbomify.com/CVE-2019-8324/index.md)
Attackers can execute arbitrary code by crafting a gem with a multi-line name, exploiting improper handling in RubyGems during preinstall checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-8324?
CVE-2019-8324 is a high-severity code injection vulnerability in Debian Debian Linux, published on 17 Jun 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-94
Which versions are affected by CVE-2019-8324?
4 open source packages ship an affected version, including rubygems-update. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
rubygems-update RubyGems | From 2.6.0 | 2.7.9 |
rubygems-update RubyGems | From 2.6.0 | 2.7.9 |
rubygems-update RubyGems | From 3.0.0 | 3.0.2 |
rubygems-update RubyGems | From 3.0.0 | 3.0.2 |
Linux distribution packages (36)
rubygem-abrt AlmaLinux:8 | All versions | 0.3.0-4.module_el8.5.0+259+8cec6917 |
rubygem-abrt AlmaLinux:8 | All versions | 0.3.0-4.module_el8.5.0+2623+08a8ba32 |
rubygem-abrt-doc AlmaLinux:8 | All versions | 0.3.0-4.module_el8.5.0+259+8cec6917 |
rubygem-abrt-doc AlmaLinux:8 | All versions | 0.3.0-4.module_el8.5.0+2623+08a8ba32 |
rubygem-bson AlmaLinux:8 | All versions | 4.3.0-2.module_el8.5.0+259+8cec6917 |
rubygem-bson AlmaLinux:8 | All versions | 4.3.0-2.module_el8.5.0+2625+ec418553 |
rubygem-bson-doc AlmaLinux:8 | All versions | 4.3.0-2.module_el8.5.0+259+8cec6917 |
rubygem-bson-doc AlmaLinux:8 | All versions | 4.3.0-2.module_el8.5.0+2625+ec418553 |
rubygem-mongo AlmaLinux:8 | All versions | 2.5.1-2.module_el8.5.0+259+8cec6917 |
rubygem-mongo AlmaLinux:8 | All versions | 2.5.1-2.module_el8.5.0+2625+ec418553 |
rubygem-mongo-doc AlmaLinux:8 | All versions | 2.5.1-2.module_el8.5.0+259+8cec6917 |
rubygem-mongo-doc AlmaLinux:8 | All versions | 2.5.1-2.module_el8.5.0+2625+ec418553 |
rubygem-mysql2 AlmaLinux:8 | All versions | 0.4.10-4.module_el8.5.0+259+8cec6917 |
rubygem-mysql2 AlmaLinux:8 | All versions | 0.4.10-4.module_el8.5.0+2625+ec418553 |
rubygem-mysql2-doc AlmaLinux:8 | All versions | 0.4.10-4.module_el8.5.0+259+8cec6917 |
rubygem-mysql2-doc AlmaLinux:8 | All versions | 0.4.10-4.module_el8.5.0+2625+ec418553 |
rubygem-pg AlmaLinux:8 | All versions | 1.0.0-2.module_el8.5.0+259+8cec6917 |
rubygem-pg AlmaLinux:8 | All versions | 1.0.0-2.module_el8.5.0+2625+ec418553 |
rubygem-pg-doc AlmaLinux:8 | All versions | 1.0.0-2.module_el8.5.0+259+8cec6917 |
rubygem-pg-doc AlmaLinux:8 | All versions | 1.0.0-2.module_el8.5.0+2625+ec418553 |
ruby Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-doc Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-irb Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-libs Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
ruby-libs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.5.3-104.module+el8.0.0+3250+4b7d6d43 |
rubygem-abrt Red Hat:enterprise_linux:8::appstream | All versions | 0:0.3.0-4.module+el8.0.0+3250+4b7d6d43 |
rubygem-abrt-doc Red Hat:enterprise_linux:8::appstream | All versions | 0:0.3.0-4.module+el8.0.0+3250+4b7d6d43 |
rubygem-bigdecimal Red Hat:enterprise_linux:8::appstream | All versions | 0:1.3.4-104.module+el8.0.0+3250+4b7d6d43 |
rubygem-bigdecimal-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.3.4-104.module+el8.0.0+3250+4b7d6d43 |
rubygem-bson Red Hat:enterprise_linux:8::appstream | All versions | 0:4.3.0-2.module+el8.0.0+3250+4b7d6d43 |
rubygem-bson-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.3.0-2.module+el8.0.0+3250+4b7d6d43 |
rubygem-bson-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:4.3.0-2.module+el8.0.0+3250+4b7d6d43 |
rubygem-bson-doc Red Hat:enterprise_linux:8::appstream | All versions | 0:4.3.0-2.module+el8.0.0+3250+4b7d6d43 |
Products include Debian Debian Linux, Opensuse Leap, Redhat Enterprise Linux, Rubygems Rubygems.
How do I fix CVE-2019-8324?
Upgrade rubygems-update to a fixed version for your release line: 2.7.9 or 3.0.2.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2019-8324 being exploited?
There is no known exploitation of CVE-2019-8324 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2019-8324, ALSA-2019:1972, DEBIAN-CVE-2019-8324, GHSA-76wm-422q-92mq, RHSA-2019:1151, RHSA-2019:1972 and 2 more.