CVE-2022-2990Public exploit

Protected file access via omitted primary group

Published Sep 13, 2022 · Updated Aug 3, 2024

Incorrect group initialization in Containers Buildah before 1.27.1 allows local users to read or modify protected container files. Buildah omits the configured primary GID from the OCI process supplementary-group list, so a set-group binary can drop the denied group. Exploitation requires code execution inside a container that relies on negative group permissions; access is confined to files that policy intended that group to deny.

CVSS severity7.1
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect group initialization in Containers Buildah before 1.27.1 allows local users to read or modify protected container files. Buildah omits the configured primary GID from the OCI process supplementary-group list, so a set-group binary can drop the denied group. Exploitation requires code execution inside a container that relies on negative group permissions; access is confined to files that policy intended that group to deny.

The record

CVE
CVE-2022-2990
Published
Sep 13, 2022
Updated
Aug 3, 2024
Vendor
Containers
Product
Buildah
Classifications
CWE-863, CWE-842, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=no fixed version known

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Containers · Buildahversion=no fixed version known

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-842Placement of User into Incorrect Group
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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