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CVE-2022-4318

24
FAUCET Score

CVE-2022-4318 is a high-severity vulnerability in cri-o, affecting products like Fedora, Kubernetes, and Red Hat. It allows an authenticated local attacker to inject arbitrary lines into the /etc/passwd file using a specially crafted environment variable. This could lead to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:kubernetes:cri-o:-:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform_for_arm64:4.12:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform_for_linuxone:4.12:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform_for_power:4.12:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform_ibm_z_systems:4.12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 50th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

gopatch availablevia ghsa
Product: github.com/cri-o/cri-oFixed in: 1.26.0
microsoftpatch availablevia msrc
Product: cbl2 cri-o 1.22.3-1 on CBL Mariner 2.0Fixed in: 1.22.3-1
microsoftpatch availablevia msrc
Product: cbl2 cri-o 1.22.3-14 on CBL Mariner 2.0Fixed in: 1.22.3-1
microsoftpatch availablevia msrc
Product: 19777-17086Fixed in: 1.22.3-1
microsoftpatch availablevia msrc
Product: 19511-16823Fixed in: 1.22.3-1
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.11Fixed in: cri-o-0:1.24.4-10.rhaos4.11.git1ed5ac5.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.12Fixed in: cri-o-0:1.25.2-9.rhaos4.12.git0a083f9.el9
View patch

Vendor Advisories (3)

microsoft2023-Sep/CVE-2022-4318Important

Cri-o: /etc/passwd tampering privesc

Sep 12, 2023
goGHSA-cm9x-c3rh-7rc4medium

CRI-O vulnerable to /etc/passwd tampering resulting in Privilege Escalation

Dec 29, 2022
redhatCVE-2022-4318Moderate

cri-o: /etc/passwd tampering privesc

Dec 12, 2022

References

access.redhat.com / errata/RHSA-2023:1033
Third Party Advisory
access.redhat.com / errata/RHSA-2023:1503
Third Party Advisory
access.redhat.com / security/cve/CVE-2022-4318
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory