CVE-2022-27651: Github.com/containers/buildah Non-empty Default Inheritable Capabilities For Vulnerability

MODERATE
Advisory Identifier: GHSA-c3g4-w6cv-6v7h
CVSS 6.8
CWE-276
Published
Advisory Summary

CVE-2022-27651 is a MODERATE (CVSS 6.8) non-empty default inheritable capabilities for vulnerability (CWE-276: Incorrect Default Permissions) affecting Github.com/containers/buildah libraries in the Go ecosystem. The issue involves non-empty default inheritable capabilities for linux container in buildah. Remediation is available by upgrading affected packages to version 1.25.0.

CVE-2022-27651 at a Glance

CVE Identifier CVE-2022-27651
GHSA Identifier GHSA-c3g4-w6cv-6v7h
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-276: Incorrect Default Permissions
Affected Product Github.com/containers/buildah
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2022-27651

To remediate this vulnerability, upgrade all affected Github.com/containers/buildah dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/containers/buildah fixed: 1.25.0
Upgrade github.com/containers/buildah to 1.25.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for github.com/containers/buildah

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-27651, inspect your project dependencies for Github.com/containers/buildah:

inspect dependencies for github.com/containers/buildah

Analyze the terminal output to locate any version of Github.com/containers/buildah in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.25.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-276: Incorrect Default Permissions, where during installation, installed file permissions are set to allow anyone to modify those files. In Github.com/containers/buildah, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A bug was found in Buildah where containers were created with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set.

CVE-2022-27651 Affected Github.com/containers/buildah Versions

1 component(s)
Fixed Versions:
1.25.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/containers/buildah
Go
< 1.25.0
1.25.0

References

Frequently Asked Questions

What is CVE-2022-27651?
CVE-2022-27651 is a security vulnerability in Github.com/containers/buildah involving Non-empty default inheritable capabilities for linux container in Buildah under CWE-276: Incorrect Default Permissions.
Which Github.com/containers/buildah versions are affected?
Affected versions include releases prior to 1.25.0 across affected packages: github.com/containers/buildah.
What version fixes CVE-2022-27651?
Upgrading to 1.25.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/containers/buildah affected?
Yes, github.com/containers/buildah is affected in releases prior to 1.25.0. Upgrade your dependency to 1.25.0 or later.
What is the CVSS score of CVE-2022-27651?
CVE-2022-27651 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2022-27651?
CVE-2022-27651 is classified under CWE-276: Incorrect Default Permissions (During installation, installed file permissions are set to allow anyone to modify those files.).
How can I check Go dependencies for CVE-2022-27651?
Run the dependency tree command: 'inspect dependencies for github.com/containers/buildah'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c3g4-w6cv-6v7h",
  "modified" : "2022-04-19T18:02:46Z",
  "published" : "2022-04-01T13:56:42Z",
  "aliases" : [ "CVE-2022-27651" ],
  "summary" : "Non-empty default inheritable capabilities for linux container in Buildah",
  "details" : "A bug was found in Buildah where containers were created with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2).\n\nThis bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containers/buildah"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.25.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/containers/buildah/security/advisories/GHSA-c3g4-w6cv-6v7h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-27651"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/containers/buildah/pull/3855"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/containers/buildah/commit/90b3254c7404039c1c786999ac189654228f6e0e"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/containers/buildah/commit/e7e55c988c05dd74005184ceb64f097a0cfe645b"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2066840"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/containers/buildah"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/25YI27MENCEPZTTGRVU6BQD5V53FNI52"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2VWH6X6HOFPO6HTESF42HIJZEPXSWVIO"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NETC7I6RTMMBRJJQVJOJUPDK4W4PQSJ"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2022-0417"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-276" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-01T13:56:42Z",
    "nvd_published_at" : "2022-04-04T20:15:00Z"
  }
}