USN-4001-1

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:16.04:LTS / libseccomp

Package

Name: libseccomp
Purl: pkg:deb/ubuntu/libseccomp@2.4.1-0ubuntu0.16.04.2?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4.1-0ubuntu0.16.04.2

Affected versions

2.*

2.2.3-2ubuntu1

2.2.3-2ubuntu2

2.2.3-2ubuntu3

2.2.3-3ubuntu1

2.2.3-3ubuntu3

2.3.1-2.1ubuntu2~16.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.4.1-0ubuntu0.16.04.2",
            "binary_name": "libseccomp-dev"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.16.04.2",
            "binary_name": "libseccomp2"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.16.04.2",
            "binary_name": "seccomp"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / libseccomp

Package

Name: libseccomp
Purl: pkg:deb/ubuntu/libseccomp@2.4.1-0ubuntu0.18.04.2?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4.1-0ubuntu0.18.04.2

Affected versions

2.*

2.3.1-2.1ubuntu3

2.3.1-2.1ubuntu4

2.3.1-2.1ubuntu4.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.4.1-0ubuntu0.18.04.2",
            "binary_name": "libseccomp-dev"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.18.04.2",
            "binary_name": "libseccomp2"
        },
        {
            "binary_version": "2.4.1-0ubuntu0.18.04.2",
            "binary_name": "seccomp"
        }
    ],
    "availability": "No subscription required"
}