UBUNTU-CVE-2018-20482

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Source
https://ubuntu.com/security/CVE-2018-20482
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20482.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-20482
Related
Published
2018-12-26T18:29:00Z
Modified
2018-12-26T18:29:00Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 4.7 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparsedumpregion in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

References

Affected packages

Ubuntu:Pro:14.04:LTS / tar

Package

Name
tar
Purl
pkg:deb/ubuntu/tar?arch=src?distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.27.1-1ubuntu0.1+esm1

Affected versions

1.*

1.26+dfsg-8
1.27-3
1.27-4
1.27.1-1
1.27.1-1ubuntu0.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.27.1-1ubuntu0.1+esm1",
            "binary_name": "tar"
        },
        {
            "binary_version": "1.27.1-1ubuntu0.1+esm1",
            "binary_name": "tar-dbgsym"
        },
        {
            "binary_version": "1.27.1-1ubuntu0.1+esm1",
            "binary_name": "tar-scripts"
        }
    ]
}

Ubuntu:16.04:LTS / tar

Package

Name
tar
Purl
pkg:deb/ubuntu/tar?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.28-2.1ubuntu0.2

Affected versions

1.*

1.27.1-2
1.28-2ubuntu1
1.28-2.1
1.28-2.1ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.28-2.1ubuntu0.2",
            "binary_name": "tar"
        },
        {
            "binary_version": "1.28-2.1ubuntu0.2",
            "binary_name": "tar-dbgsym"
        },
        {
            "binary_version": "1.28-2.1ubuntu0.2",
            "binary_name": "tar-scripts"
        }
    ]
}

Ubuntu:18.04:LTS / tar

Package

Name
tar
Purl
pkg:deb/ubuntu/tar?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.29b-2ubuntu0.2

Affected versions

1.*

1.29b-2
1.29b-2ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.29b-2ubuntu0.2",
            "binary_name": "tar"
        },
        {
            "binary_version": "1.29b-2ubuntu0.2",
            "binary_name": "tar-dbgsym"
        },
        {
            "binary_version": "1.29b-2ubuntu0.2",
            "binary_name": "tar-scripts"
        }
    ]
}

Ubuntu:20.04:LTS / tar

Package

Name
tar
Purl
pkg:deb/ubuntu/tar?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.30+dfsg-6

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.30+dfsg-6",
            "binary_name": "tar"
        },
        {
            "binary_version": "1.30+dfsg-6",
            "binary_name": "tar-dbgsym"
        },
        {
            "binary_version": "1.30+dfsg-6",
            "binary_name": "tar-scripts"
        }
    ]
}