UBUNTU-CVE-2020-36773

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Source
https://ubuntu.com/security/CVE-2020-36773
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36773.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-36773
Upstream
Withdrawn
2025-07-18T16:46:18Z
Published
2024-02-04T18:16:00Z
Modified
2025-07-16T07:19:35.460480Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature).

References

Affected packages

Ubuntu:20.04:LTS / ghostscript

Package

Name
ghostscript
Purl
pkg:deb/ubuntu/ghostscript@9.50~dfsg-5ubuntu4.11?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.50~dfsg-5ubuntu4.11

Affected versions

9.*

9.27~dfsg+0-0ubuntu3
9.27~dfsg+0-0ubuntu4
9.50~dfsg-5ubuntu1
9.50~dfsg-5ubuntu2
9.50~dfsg-5ubuntu3
9.50~dfsg-5ubuntu4
9.50~dfsg-5ubuntu4.1
9.50~dfsg-5ubuntu4.2
9.50~dfsg-5ubuntu4.3
9.50~dfsg-5ubuntu4.4
9.50~dfsg-5ubuntu4.5
9.50~dfsg-5ubuntu4.6
9.50~dfsg-5ubuntu4.7
9.50~dfsg-5ubuntu4.8
9.50~dfsg-5ubuntu4.9
9.50~dfsg-5ubuntu4.10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ghostscript",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "ghostscript-dbg",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "ghostscript-doc",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "ghostscript-x",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "libgs-dev",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "libgs9",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        },
        {
            "binary_name": "libgs9-common",
            "binary_version": "9.50~dfsg-5ubuntu4.11"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36773.json"

Ubuntu:22.04:LTS / ghostscript

Package

Name
ghostscript
Purl
pkg:deb/ubuntu/ghostscript@9.55.0~dfsg1-0ubuntu5.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
9.55.0~dfsg1-0ubuntu5.5

Affected versions

9.*

9.54.0~dfsg1-0ubuntu2
9.55.0~dfsg1-0ubuntu4
9.55.0~dfsg1-0ubuntu5
9.55.0~dfsg1-0ubuntu5.1
9.55.0~dfsg1-0ubuntu5.2
9.55.0~dfsg1-0ubuntu5.3
9.55.0~dfsg1-0ubuntu5.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ghostscript",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "ghostscript-dbgsym",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "ghostscript-doc",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "ghostscript-x",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "ghostscript-x-dbgsym",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "libgs-dev",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "libgs9",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "libgs9-common",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        },
        {
            "binary_name": "libgs9-dbgsym",
            "binary_version": "9.55.0~dfsg1-0ubuntu5.5"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36773.json"