USN-4797-1

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Source
https://ubuntu.com/security/notices/USN-4797-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4797-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4797-1
Related
Published
2022-05-04T10:38:06.348811Z
Modified
2022-05-04T10:38:06.348811Z
Summary
libass vulnerabilities
Details

It was discovered that LibASS incorrectly handled certain ASS files. A remote attacker could possibly use this issue to cause a denial of service. One of the issues, CVE-2016-7970, only affected Ubuntu 16.04 ESM. (CVE-2016-7969, CVE-2016-7970, CVE-2016-7972)

It was discovered that LibASS incorrectly handled parsing operations for specific nested character strings. An attacker could possibly use this issue to cause a denial of service. This issue was only fixed in Ubuntu 16.04 LTS. (CVE-2020-24994)

References

Affected packages

Ubuntu:Pro:14.04:LTS / libass

Package

Name
libass
Purl
pkg:deb/ubuntu/libass@0.10.1-3ubuntu1+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.10.1-3ubuntu1+esm1

Affected versions

0.*

0.10.1-1ubuntu1
0.10.1-3
0.10.1-3ubuntu1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.10.1-3ubuntu1+esm1",
            "binary_name": "libass-dev"
        },
        {
            "binary_version": "0.10.1-3ubuntu1+esm1",
            "binary_name": "libass4"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / libass

Package

Name
libass
Purl
pkg:deb/ubuntu/libass@0.13.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.13.1-1ubuntu0.1~esm2

Affected versions

0.*

0.12.3-2
0.13.0-1
0.13.1-1
0.13.1-1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.13.1-1ubuntu0.1~esm2",
            "binary_name": "libass-dev"
        },
        {
            "binary_version": "0.13.1-1ubuntu0.1~esm2",
            "binary_name": "libass5"
        },
        {
            "binary_version": "0.13.1-1ubuntu0.1~esm2",
            "binary_name": "libass5-dbgsym"
        }
    ]
}