CVE-2022-2211 Denial of service in libguestfs
Medium 6.5
Published
Updated
Check this codebase for CVE-2022-2211 and fix it if it is affected.
What it is: CVE-2022-2211 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux, published on 12 Jul 2022. 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-2022-2211 in the wild and no public exploit code.
Affected product: Redhat Enterprise Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
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-2022-2211/ (Markdown: https://insights.sbomify.com/CVE-2022-2211/index.md)
A flaw in libguestfs allows attackers to cause a denial of service via the get_keys function.
- 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-2022-2211?
CVE-2022-2211 is a medium-severity denial of service vulnerability in Redhat Enterprise Linux, published on 12 Jul 2022. 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
A vulnerability was found in libguestfs. This issue occurs while calculating the greatest possible number of matching keys in the get_keys() function. This flaw leads to a denial of service, either by mistake or malicious actor.
Weakness: CWE-120
Which versions are affected by CVE-2022-2211?
It affects 2 products.
Linux distribution packages (40)
guestfs-tools AlmaLinux:9 | All versions | 1.48.2-5.el9 |
libguestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-appliance AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-bash-completion AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-devel AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-gobject AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-gobject-devel AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-inspect-icons AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-man-pages-ja AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-man-pages-uk AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-rescue AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-rsync AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
libguestfs-xfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
lua-guestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
ocaml-libguestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
ocaml-libguestfs-devel AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
perl-Sys-Guestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
php-libguestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
python3-libguestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
ruby-libguestfs AlmaLinux:9 | All versions | 1:1.48.4-2.el9.alma |
virt-v2v AlmaLinux:9 | All versions | 1:2.0.7-6.el9 |
virt-v2v-bash-completion AlmaLinux:9 | All versions | 1:2.0.7-6.el9 |
virt-v2v-man-pages-ja AlmaLinux:9 | All versions | 1:2.0.7-6.el9 |
virt-v2v-man-pages-uk AlmaLinux:9 | All versions | 1:2.0.7-6.el9 |
virt-win-reg AlmaLinux:9 | All versions | 1.48.2-5.el9 |
guestfs-tools Red Hat:enterprise_linux:9::appstream | All versions | 0:1.48.2-5.el9 |
guestfs-tools-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.48.2-5.el9 |
guestfs-tools-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:1.48.2-5.el9 |
libguestfs Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-appliance Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-bash-completion Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-gobject-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-inspect-icons Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-rescue Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-rescue-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-rsync Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
libguestfs-xfs Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
lua-guestfs-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.48.4-2.el9 |
Products include Libguestfs Libguestfs, Redhat Enterprise Linux.
How do I fix CVE-2022-2211?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-2211 being exploited?
There is no known exploitation of CVE-2022-2211 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as ALSA-2022:7958, ALSA-2022:7959, ALSA-2022:7968, DEBIAN-CVE-2022-2211, GHSA-8rvm-f29f-fjx6, RHSA-2022:7958 and 11 more.