USN-4001-2

Jann Horn discovered that libseccomp did not correctly generate 64-bit syscall argument comparisons with arithmetic operators (LT, GT, LE, GE). An attacker could use this to bypass intended access restrictions for argument-filtered system calls.

References

Affected packages

Ubuntu:Pro:14.04:LTS / libseccomp

Package

Name: libseccomp
Purl: pkg:deb/ubuntu/libseccomp@2.4.1-0ubuntu0.14.04.2?arch=source&distro=trusty/esm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4.1-0ubuntu0.14.04.2

Affected versions

1.*

1.0.1-2

2.*

2.1.0+dfsg-1

2.1.1-1ubuntu1~trusty3

2.1.1-1ubuntu1~trusty4

2.1.1-1ubuntu1~trusty5

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.4.1-0ubuntu0.14.04.2",
            "binary_name": "libseccomp-dev"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.14.04.2",
            "binary_name": "libseccomp2"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.14.04.2",
            "binary_name": "seccomp"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4001-2.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2019-9893",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}