UBUNTU-CVE-2021-36087

The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmapmatchany (called indirectly from cilcheckneverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.

References

Affected packages

Ubuntu:Pro:16.04:LTS / libsepol

Package

Name: libsepol
Purl: pkg:deb/ubuntu/libsepol@2.4-2ubuntu0.1~esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.4-2ubuntu0.1~esm1

Affected versions

2.*

2.3-2

2.4-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libsepol1",
            "binary_version": "2.4-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "sepol-utils",
            "binary_version": "2.4-2ubuntu0.1~esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36087.json"

Ubuntu:18.04:LTS / libsepol

Package

Name: libsepol
Purl: pkg:deb/ubuntu/libsepol@2.7-1ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.7-1ubuntu0.1

Affected versions

2.*

2.7-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libsepol1",
            "binary_version": "2.7-1ubuntu0.1"
        },
        {
            "binary_name": "sepol-utils",
            "binary_version": "2.7-1ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36087.json"

Ubuntu:20.04:LTS / libsepol

Package

Name: libsepol
Purl: pkg:deb/ubuntu/libsepol@3.0-1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.0-1ubuntu0.1

Affected versions

2.*

2.9-2

3.*

3.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libsepol1",
            "binary_version": "3.0-1ubuntu0.1"
        },
        {
            "binary_name": "sepol-utils",
            "binary_version": "3.0-1ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36087.json"