Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2022-4318: Cri-o: /etc/passwd tampering privesc

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: github.com/cri-o/cri-o (Go) 1.26.0; cri-o (Red Hat:openshift:4.11::el8) 0:1.24.4-10.rhaos4.11.git1ed5ac5.el8; cri-o-debuginfo (Red Hat:openshift:4.11::el8) 0:1.24.4-10.rhaos4.11.git1ed5ac5.el8.

Low priority for now. Upgrade to github.com/cri-o/cri-o (Go) 1.26.0; cri-o (Red Hat:openshift:4.11::el8) 0:1.24.4-10.rhaos4.11.git1ed5ac5.el8; cri-o-debuginfo (Red Hat:openshift:4.11::el8) 0:1.24.4-10.rhaos4.11.git1ed5ac5.el8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability was found in cri-o. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 25, 2023
Updated
Jun 17, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · redhat
7.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-4318

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for kubernetes records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
kubernetescri-o
redhatopenshift container platform for arm64
redhatopenshift container platform for linuxone
redhatopenshift container platform for power
redhatopenshift container platform ibm z systems
redhatenterprise linux
fedoraprojectextra packages for enterprise linux
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject extra packages for enterprise linux8.0
  • fedoraproject fedora36
  • fedoraproject fedora37
  • kubernetes cri-oall versions
  • redhat openshift container platform for arm644.11
  • redhat openshift container platform for arm644.12
  • redhat openshift container platform for linuxone4.11
  • redhat openshift container platform for linuxone4.12
  • redhat openshift container platform for power4.11
  • redhat openshift container platform for power4.12
  • redhat openshift container platform ibm z systems4.11
  • redhat openshift container platform ibm z systems4.12

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsunknown

  • Red Hat Red Hat OpenShift Container Platform 4.11

    • 0:1.24.4-10.rhaos4.11.git1ed5ac5.el8 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.12

    • 0:1.25.2-9.rhaos4.12.git0a083f9.el9 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Gogithub.com/cri-o/cri-obefore 1.26.01.26.0
Red Hat:openshift:4.11::el8cri-obefore 0:1.24.4-10.rhaos4.11.git1ed5ac5.el80:1.24.4-10.rhaos4.11.git1ed5ac5.el8
Red Hat:openshift:4.11::el8cri-o-debuginfobefore 0:1.24.4-10.rhaos4.11.git1ed5ac5.el80:1.24.4-10.rhaos4.11.git1ed5ac5.el8
Red Hat:openshift:4.11::el8cri-o-debugsourcebefore 0:1.24.4-10.rhaos4.11.git1ed5ac5.el80:1.24.4-10.rhaos4.11.git1ed5ac5.el8
Red Hat:openshift:4.12::el8cri-obefore 0:1.25.2-10.rhaos4.12.git0a083f9.el80:1.25.2-10.rhaos4.12.git0a083f9.el8
Red Hat:openshift:4.12::el8cri-o-debuginfobefore 0:1.25.2-10.rhaos4.12.git0a083f9.el80:1.25.2-10.rhaos4.12.git0a083f9.el8
Red Hat:openshift:4.12::el8cri-o-debugsourcebefore 0:1.25.2-10.rhaos4.12.git0a083f9.el80:1.25.2-10.rhaos4.12.git0a083f9.el8
Red Hat:openshift:4.12::el9cri-obefore 0:1.25.2-9.rhaos4.12.git0a083f9.el90:1.25.2-9.rhaos4.12.git0a083f9.el9
Red Hat:openshift:4.12::el9cri-o-debuginfobefore 0:1.25.2-9.rhaos4.12.git0a083f9.el90:1.25.2-9.rhaos4.12.git0a083f9.el9
Red Hat:openshift:4.12::el9cri-o-debugsourcebefore 0:1.25.2-9.rhaos4.12.git0a083f9.el90:1.25.2-9.rhaos4.12.git0a083f9.el9

Same product

kubernetes: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0811A flaw was found in CRI-O in the way it set kernel options for a pod.
    41Plan
  • CVE-2018-1000400Kubernetes CRI-O version prior to 1.9 contains a Privilege Context Switching Error (CWE-270) vulnerability in the handling of ambient capabi
    36Monitor
  • CVE-2024-5154Cri-o: malicious container can create symlink on host
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2022-1708Jun 7, 2022 · A vulnerability was found in CRI-O that causes memory or disk space exhaustion on the node for anyone with access to the Kube API.
    31Monitor
  • ← EarlierCVE-2022-2995Sep 19, 2022 · Incorrect handling of the supplementary groups in the CRI-O container engine might lead to sensitive information disclosure or possible data
    28Monitor
  • ← EarlierCVE-2022-3466Sep 15, 2023 · Cri-o: security regression of cve-2022-27652
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go:github.com/cri-o/cri-o1.26.0Package registry (OSV)
red hat:cri-o0:1.25.2-10.rhaos4.12.git0a083f9.el8 · Red Hat:openshift:4.12::el8Package registry (OSV)
red hat:cri-o-debuginfo0:1.25.2-10.rhaos4.12.git0a083f9.el8 · Red Hat:openshift:4.12::el8Package registry (OSV)
red hat:cri-o-debugsource0:1.25.2-10.rhaos4.12.git0a083f9.el8 · Red Hat:openshift:4.12::el8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-538 · Insertion of Sensitive Information into Externally-Accessible File or Directory

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records