UBUNTU-CVE-2021-23437

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Source
https://ubuntu.com/security/CVE-2021-23437
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23437.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-23437
Upstream
Downstream
Related
Published
2021-09-03T16:15:00Z
Modified
2025-09-08T16:46:59Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.

References

Affected packages

Ubuntu:18.04:LTS

pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow@5.1.0-1ubuntu0.7?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.1.0-1ubuntu0.7

Affected versions

4.*

4.1.1-3build2
4.3.0-2ubuntu1

5.*

5.0.0-1
5.1.0-1
5.1.0-1ubuntu0.2
5.1.0-1ubuntu0.3
5.1.0-1ubuntu0.4
5.1.0-1ubuntu0.5
5.1.0-1ubuntu0.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.1.0-1ubuntu0.7",
            "binary_name": "python-pil"
        },
        {
            "binary_version": "5.1.0-1ubuntu0.7",
            "binary_name": "python-pil.imagetk"
        },
        {
            "binary_version": "5.1.0-1ubuntu0.7",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "5.1.0-1ubuntu0.7",
            "binary_name": "python3-pil.imagetk"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS

pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow@7.0.0-4ubuntu0.5?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.0.0-4ubuntu0.5

Affected versions

6.*

6.1.0-1
6.1.0-1build1
6.2.1-2

7.*

7.0.0-4
7.0.0-4build1
7.0.0-4ubuntu0.1
7.0.0-4ubuntu0.2
7.0.0-4ubuntu0.3
7.0.0-4ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.0.0-4ubuntu0.5",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "7.0.0-4ubuntu0.5",
            "binary_name": "python3-pil.imagetk"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS

pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow@9.0.0-1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.0.0-1

Affected versions

8.*

8.1.2+dfsg-0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "9.0.0-1",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "9.0.0-1",
            "binary_name": "python3-pil.imagetk"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:14.04:LTS

pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow@2.3.0-1ubuntu3.4+esm3?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.3.0-1ubuntu3.4+esm3

Affected versions

2.*

2.2.1-1ubuntu2
2.2.1-2ubuntu1
2.2.1-3ubuntu2
2.2.1-3ubuntu3
2.2.1-3ubuntu4
2.2.1-3ubuntu6
2.3.0-1ubuntu1
2.3.0-1ubuntu2
2.3.0-1ubuntu3
2.3.0-1ubuntu3.2
2.3.0-1ubuntu3.3
2.3.0-1ubuntu3.4
2.3.0-1ubuntu3.4+esm1
2.3.0-1ubuntu3.4+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-imaging"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-imaging-compat"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-imaging-sane"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-imaging-tk"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-pil"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-pil.imagetk"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python-sane"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-imaging"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-imaging-sane"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-imaging-tk"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-pil.imagetk"
        },
        {
            "binary_version": "2.3.0-1ubuntu3.4+esm3",
            "binary_name": "python3-sane"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS

pillow

Package

Name
pillow
Purl
pkg:deb/ubuntu/pillow@3.1.2-0ubuntu1.6+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.2-0ubuntu1.6+esm1

Affected versions

2.*

2.9.0-1

3.*

3.0.0-1
3.0.0-1build1
3.1.0-1
3.1.1-1
3.1.2-0ubuntu1
3.1.2-0ubuntu1.1
3.1.2-0ubuntu1.3
3.1.2-0ubuntu1.4
3.1.2-0ubuntu1.5
3.1.2-0ubuntu1.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.1.2-0ubuntu1.6+esm1",
            "binary_name": "python-imaging"
        },
        {
            "binary_version": "3.1.2-0ubuntu1.6+esm1",
            "binary_name": "python-pil"
        },
        {
            "binary_version": "3.1.2-0ubuntu1.6+esm1",
            "binary_name": "python-pil.imagetk"
        },
        {
            "binary_version": "3.1.2-0ubuntu1.6+esm1",
            "binary_name": "python3-pil"
        },
        {
            "binary_version": "3.1.2-0ubuntu1.6+esm1",
            "binary_name": "python3-pil.imagetk"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:20.04:LTS

pillow-python2

Package

Name
pillow-python2
Purl
pkg:deb/ubuntu/pillow-python2@6.2.1-3ubuntu0.1~esm2?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

6.*

6.2.1-3~build1
6.2.1-3
6.2.1-3ubuntu0.1~esm1
6.2.1-3ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.2.1-3ubuntu0.1~esm2",
            "binary_name": "python-pil"
        },
        {
            "binary_version": "6.2.1-3ubuntu0.1~esm2",
            "binary_name": "python-pil.imagetk"
        }
    ]
}