USN-2957-2

Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled certain malformed DER certificates. A remote attacker could possibly use this issue to cause applications using Libtasn1 to hang, resulting in a denial of service.

References

Affected packages

Ubuntu:16.04:LTS / libtasn1-6

Package

Name: libtasn1-6
Purl: pkg:deb/ubuntu/libtasn1-6@4.7-3ubuntu0.16.04.1?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.7-3ubuntu0.16.04.1

Affected versions

4.*

4.5-2

4.7-2

4.7-3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libtasn1-3-bin",
            "binary_version": "4.7-3ubuntu0.16.04.1"
        },
        {
            "binary_name": "libtasn1-6",
            "binary_version": "4.7-3ubuntu0.16.04.1"
        },
        {
            "binary_name": "libtasn1-6-dev",
            "binary_version": "4.7-3ubuntu0.16.04.1"
        },
        {
            "binary_name": "libtasn1-bin",
            "binary_version": "4.7-3ubuntu0.16.04.1"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2016-4008",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-2957-2.json"