USN-8987-1

It was discovered that libuser did not properly validate the GECOS field when changing user information. A local attacker could possibly use this issue to corrupt the passwd file, resulting in a denial of service. (CVE-2015-3245)

It was discovered that libuser modified the passwd file in place when updating user information. A local attacker could possibly use this issue to cause an inconsistent file state, resulting in a denial of service, or possibly escalate privileges. (CVE-2015-3246)

References

Affected packages

Ubuntu:Pro:16.04:LTS / libuser

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1:0.60~dfsg-1.2ubuntu0.1~esm1

Affected versions

1:0.*

1:0.60~dfsg-1.2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libuser",
            "binary_version": "1:0.60~dfsg-1.2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libuser1",
            "binary_version": "1:0.60~dfsg-1.2ubuntu0.1~esm1"
        },
        {
            "binary_name": "python-libuser",
            "binary_version": "1:0.60~dfsg-1.2ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2015-3245",
            "severity": [
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2015-3246",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8987-1.json"