UBUNTU-CVE-2026-79705

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Source
https://ubuntu.com/security/CVE-2026-79705
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79705.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-79705
Upstream
  • CVE-2026-79705
Published
2026-09-15T17:17:00Z
Modified
2026-10-28T20:17:05Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.

References

Affected packages

Ubuntu:22.04:LTS
golang-github-containers-buildah

Package

Name
golang-github-containers-buildah
Purl
pkg:deb/ubuntu/golang-github-containers-buildah?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.21.3+ds1-1ubuntu1
1.23.1+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buildah",
            "binary_version": "1.23.1+ds1-2"
        },
        {
            "binary_name": "golang-github-containers-buildah-dev",
            "binary_version": "1.23.1+ds1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79705.json"
Ubuntu:26.10
golang-github-containers-buildah

Package

Name
golang-github-containers-buildah
Purl
pkg:deb/ubuntu/golang-github-containers-buildah?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.42.1+ds1-2build1
1.43.2+ds1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buildah",
            "binary_version": "1.43.2+ds1-3"
        },
        {
            "binary_name": "golang-github-containers-buildah-dev",
            "binary_version": "1.43.2+ds1-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79705.json"
Ubuntu:Pro:24.04:LTS
golang-github-containers-buildah

Package

Name
golang-github-containers-buildah
Purl
pkg:deb/ubuntu/golang-github-containers-buildah?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.28.2+ds1-3build1
1.32.2+ds1-1
1.33.1+ds1-2
1.33.3+ds1-2
1.33.5+ds1-4
1.33.5+ds1-4build1
1.33.5+ds1-4build2
1.33.7+ds1-1
1.33.7+ds1-1ubuntu0.24.04.1
1.33.7+ds1-1ubuntu0.24.04.2
1.33.7+ds1-1ubuntu0.24.04.2+esm1
1.33.7+ds1-1ubuntu0.24.04.2+esm2
1.33.7+ds1-1ubuntu0.24.04.3
1.33.7+ds1-1ubuntu0.24.04.3+esm2
1.33.7+ds1-1ubuntu0.24.04.3+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buildah",
            "binary_version": "1.33.7+ds1-1ubuntu0.24.04.3+esm3"
        },
        {
            "binary_name": "golang-github-containers-buildah-dev",
            "binary_version": "1.33.7+ds1-1ubuntu0.24.04.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79705.json"
Ubuntu:Pro:26.04:LTS
golang-github-containers-buildah

Package

Name
golang-github-containers-buildah
Purl
pkg:deb/ubuntu/golang-github-containers-buildah?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.39.3+ds1-1syncable1
1.42.1+ds1-2
1.42.1+ds1-2build1
1.42.1+ds1-2ubuntu0.26.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "buildah",
            "binary_version": "1.42.1+ds1-2ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "golang-github-containers-buildah-dev",
            "binary_version": "1.42.1+ds1-2ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-79705.json"