Information disclosure in Containerd
CVE-2022-23648
containerd is a container runtime available as a daemon for Linux and Windows. A bug was found in containerd prior to versions 1.6.1, 1.5.10, and 1.14.12 where containers launched through containerd’s CRI implementation on Linux with a specially-crafted image configuration could gain access to read-only copies of arbitrary files and directories on the host. This may bypass any policy-based enforcement on container setup (including a Kubernetes Pod Security Policy) and expose potentially sensitive information. Kubernetes and crictl can both be configured to use containerd’s CRI implementation. This bug has been fixed in containerd 1.6.1, 1.5.10, and 1.4.12. Users should update to these versions to resolve the issue.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.274 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.274 · newest: 0.274 · change: 0.000
Affected products
- Containerd — versions < 1.4.13, >= 1.5.0, < 1.5.10, >= 1.6.0, < 1.6.1
- Linuxfoundation Containerd
- Debian Linux — versions 11.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/containerd/containerd/security/advisories/GHSA-crp2-qrr5-8pq7 (Third Party Advisory)
- github.com/containerd/containerd/commit/10f428dac7cec44c864e1b830a4623af27a9fc70 (Patch, Third Party Advisory)
- github.com/containerd/containerd/releases/tag/v1.4.13 (Patch, Third Party Advisory, Release Notes)
- github.com/containerd/containerd/releases/tag/v1.5.10 (Patch, Third Party Advisory, Release Notes)
- github.com/containerd/containerd/releases/tag/v1.6.1 (Patch, Third Party Advisory, Release Notes)
- www.debian.org/security/2022/dsa-5091 (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- packetstormsecurity.com/files/166421/containerd-Image-Volume-Insecure-Handling… (Exploit, VDB Entry, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2022-23648?
- CVE-2022-23648 is a high-severity vulnerability in Containerd, classified under Information Disclosure. CVSS score: 7.5/10. Published 2022-03-03.
- How severe is CVE-2022-23648?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-23648 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.