UBUNTU-CVE-2020-36430

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Source
https://ubuntu.com/security/CVE-2020-36430
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36430.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-36430
Upstream
Withdrawn
2025-07-18T16:46:17Z
Published
2021-07-20T07:15:00Z
Modified
2025-07-16T08:25:32.329563Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decodechars (called from decodefont and process_text) because the wrong integer data type is used for subtraction.

References

Affected packages

Ubuntu:22.04:LTS / libass

Package

Name
libass
Purl
pkg:deb/ubuntu/libass@1:0.15.2-1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:0.15.2-1

Affected versions

1:0.*
1:0.15.0-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libass-dev",
            "binary_version": "1:0.15.2-1"
        },
        {
            "binary_name": "libass9",
            "binary_version": "1:0.15.2-1"
        },
        {
            "binary_name": "libass9-dbgsym",
            "binary_version": "1:0.15.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36430.json"