CVE-2022-4318

highpriority · track · 31EPSS 0.003 · 21 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.29% (21st) EPSS
CVSS 7.8 · high
Is it mine?
21 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.1–7.8

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9
v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 1.8 · impact 5.9
v3.16.1mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:Nsecondary · OSV
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-913USprimaryCWE-538USCWE-538USCWE-913USCWE-913US
04

affected products (21)

Products and version ranges known to be affected.

showing 20 of 21
05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2023-0600Red Hat OpenShift: Schwachstelle ermöglicht Manipulation von DateienDeutsch2023-03-08csaf · cert_bundDE

    Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Red Hat OpenShift ausnutzen, um Dateien zu manipulieren.

  • GHSA-cm9x-c3rh-7rc4CRI-O vulnerable to /etc/passwd tampering resulting in Privilege Escalation2022-12-29ghsa · osvUS

    ### Impact It is possible to craft an environment variable with newlines to add entries to a container's /etc/passwd. It is possible to circumvent admission validation of username/UID by adding such an entry. Note: because the pod author is in control of the container's /etc/passwd, this is not considered a new risk factor. However, this advisory is being opened for transparency and as a way of tracking fixes. ### Patches 1.26.0 will have the fix. More patches will be posted as they're available. ### Workarounds Additional security controls like SELinux should prevent any damage a container is able to do with root on the host. Using SELinux is recommended because this class of attack is already possible by manually editing the container's /etc/passwd ### References

  • GO-2022-1206CRI-O vulnerable to /etc/passwd tampering resulting in Privilege Escalation in github.com/cri-o/cri-o2024-08-21vendor · osvUS

    CRI-O vulnerable to /etc/passwd tampering resulting in Privilege Escalation in github.com/cri-o/cri-o

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundnvdNVDCVE.orgMITRE
published 2023-09-25modified 2026-06-17
09

references (14)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan