CVE-2022-27651 Non-empty default inheritable capabilities for linux container in Buildah
Attackers with access to programs with inheritable file capabilities can elevate privileges within Buildah containers due to incorrect default permission settings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-27651?
CVE-2022-27651 is a medium-severity vulnerability in Fedoraproject Fedora, published on 4 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in buildah where containers were incorrectly started with non-empty default permissions. A bug was found in Moby (Docker Engine) where containers were incorrectly started with non-empty inheritable Linux process capabilities, enabling an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs. This has the potential to impact confidentiality and integrity.
Weakness: CWE-276
Which versions are affected by CVE-2022-27651?
3 open source packages ship an affected version, including github.com/containers/buildah. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/containers/buildah Go | All versions | 1.25.0 |
github.com/containers/buildah Go | All versions | 1.25.0 |
github.com/containers/buildah Go | All versions | 1.25.0 |
Linux distribution packages (5)
buildah SUSE:Linux Enterprise Module for Containers 15 SP3 | All versions | 1.25.1-150300.8.6.1 |
buildah SUSE:Linux Enterprise Module for Containers 15 SP4 | All versions | 1.25.1-150400.3.3.28 |
buildah openSUSE:Leap 15.3 | All versions | 1.25.1-150300.8.6.1 |
buildah openSUSE:Leap 15.4 | All versions | 1.25.1-150400.3.3.28 |
buildah openSUSE:Tumbleweed | All versions | 1.25.1-1.1 |
Products include Buildah Project Buildah, Fedoraproject Fedora, Redhat Enterprise Linux.
How do I fix CVE-2022-27651?
Upgrade github.com/containers/buildah to 1.25.0 or later.
Is CVE-2022-27651 being exploited?
There is no known exploitation of CVE-2022-27651 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
- CVE-2020-10696 Path Traversal in Buildah
- CVE-2024-9675 Buildah: buildah allows arbitrary directory mount
- CVE-2022-2990 Buildah's incorrect handling of the supplementary groups may lead to data disclosure, modification
- CVE-2019-10214 containers/image library Insufficiently Protects Credentials
- CVE-2021-3602 Buildah processes using chroot isolation may leak environment values to intermediate processes
Sources
Also known as AZL-11513, AZL-36934, AZL-39870, AZL-9318, DEBIAN-CVE-2022-27651, GHSA-c3g4-w6cv-6v7h and 5 more.