USN-5446-2

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Source
https://ubuntu.com/security/notices/USN-5446-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5446-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5446-2
Upstream
Related
Published
2022-05-30T15:29:17Z
Modified
2026-05-20T16:03:19.121275969Z
Summary
dpkg vulnerability
Details

USN-5446-1 fixed a vulnerability in dpkg. This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Max Justicz discovered that dpkg incorrectly handled unpacking certain source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system.

References

Affected packages

Ubuntu:Pro:16.04:LTS / dpkg

Package

Name
dpkg
Purl
pkg:deb/ubuntu/dpkg?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.4ubuntu1.7+esm1

Affected versions

1.*
1.18.2ubuntu5
1.18.3ubuntu1
1.18.4ubuntu1
1.18.4ubuntu1.1
1.18.4ubuntu1.2
1.18.4ubuntu1.3
1.18.4ubuntu1.4
1.18.4ubuntu1.5
1.18.4ubuntu1.6
1.18.4ubuntu1.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dselect",
            "binary_version": "1.18.4ubuntu1.7+esm1"
        },
        {
            "binary_name": "dpkg",
            "binary_version": "1.18.4ubuntu1.7+esm1"
        },
        {
            "binary_name": "libdpkg-perl",
            "binary_version": "1.18.4ubuntu1.7+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5446-2.json"