UBUNTU-CVE-2022-42919

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Source
https://ubuntu.com/security/CVE-2022-42919
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-42919.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2022-42919
Related
Published
2022-11-02T00:00:00Z
Modified
2024-10-15T14:10:15Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstractsocketssupported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

References

Affected packages

Ubuntu:20.04:LTS / python3.9

Package

Name
python3.9
Purl
pkg:deb/ubuntu/python3.9?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.9.0~rc1-1~20.04
3.9.0-5~20.04
3.9.5-3~20.04.1
3.9.5-3ubuntu0~20.04.1

Ecosystem specific 

{
    "ubuntu_priority": "high"
}

Ubuntu:Pro:20.04:LTS / python3.9

Package

Name
python3.9
Purl
pkg:deb/ubuntu/python3.9?arch=src?distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.9.5-3ubuntu0~20.04.1+esm1

Affected versions

3.*

3.9.0~rc1-1~20.04
3.9.0-5~20.04
3.9.5-3~20.04.1
3.9.5-3ubuntu0~20.04.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "idle-python3.9"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9-dbg"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9-dev"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9-minimal"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9-stdlib"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "libpython3.9-testsuite"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-dbg"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-dev"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-doc"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-examples"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-full"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-minimal"
        },
        {
            "binary_version": "3.9.5-3ubuntu0~20.04.1+esm1",
            "binary_name": "python3.9-venv"
        }
    ]
}

Ubuntu:22.04:LTS / python3.10

Package

Name
python3.10
Purl
pkg:deb/ubuntu/python3.10?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.10.6-1~22.04.1

Affected versions

3.*

3.10.0-2
3.10.0-3
3.10.0-4
3.10.0-5
3.10.0-5build1
3.10.1-1
3.10.1-2
3.10.2-1
3.10.2-5
3.10.2-7
3.10.3-1
3.10.4-3
3.10.4-3ubuntu0.1
3.10.6-1~22.04

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "idle-python3.10"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10-dbg"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10-dev"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10-minimal"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10-stdlib"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "libpython3.10-testsuite"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-dbg"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-dev"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-doc"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-examples"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-full"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-minimal"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-nopie"
        },
        {
            "binary_version": "3.10.6-1~22.04.1",
            "binary_name": "python3.10-venv"
        }
    ]
}

Ubuntu:22.04:LTS / python3.11

Package

Name
python3.11
Purl
pkg:deb/ubuntu/python3.11?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.11.0~rc1-1~22.04

Ecosystem specific 

{
    "ubuntu_priority": "high"
}