UBUNTU-CVE-2018-20821

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Source
https://ubuntu.com/security/CVE-2018-20821
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20821.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-20821
Related
Published
2019-04-23T14:29:00Z
Modified
2025-04-03T04:37:49Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parsecssvariable_value in parser.cpp).

References

Affected packages

Ubuntu:20.04:LTS / libsass

Package

Name
libsass
Purl
pkg:deb/ubuntu/libsass@3.6.3-1ubuntu1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.3-1ubuntu1

Affected versions

3.*

3.5.5-4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "libsass-dev",
            "binary_version": "3.6.3-1ubuntu1"
        },
        {
            "binary_name": "libsass1",
            "binary_version": "3.6.3-1ubuntu1"
        },
        {
            "binary_name": "libsass1-dbgsym",
            "binary_version": "3.6.3-1ubuntu1"
        }
    ]
}

Ubuntu:22.04:LTS / libsass

Package

Name
libsass
Purl
pkg:deb/ubuntu/libsass@3.6.5-1ubuntu1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.5-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "libsass-dev",
            "binary_version": "3.6.5-1ubuntu1"
        },
        {
            "binary_name": "libsass1",
            "binary_version": "3.6.5-1ubuntu1"
        },
        {
            "binary_name": "libsass1-dbgsym",
            "binary_version": "3.6.5-1ubuntu1"
        }
    ]
}

Ubuntu:24.10 / libsass

Package

Name
libsass
Purl
pkg:deb/ubuntu/libsass@3.6.5+20231221-3?arch=source&distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.5+20231221-3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "libsass-dev",
            "binary_version": "3.6.5+20231221-3"
        },
        {
            "binary_name": "libsass1",
            "binary_version": "3.6.5+20231221-3"
        },
        {
            "binary_name": "libsass1-dbgsym",
            "binary_version": "3.6.5+20231221-3"
        }
    ]
}

Ubuntu:24.04:LTS / libsass

Package

Name
libsass
Purl
pkg:deb/ubuntu/libsass@3.6.5+20231221-3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.5+20231221-3

Affected versions

3.*

3.6.5+20220909-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "libsass-dev",
            "binary_version": "3.6.5+20231221-3"
        },
        {
            "binary_name": "libsass1",
            "binary_version": "3.6.5+20231221-3"
        },
        {
            "binary_name": "libsass1-dbgsym",
            "binary_version": "3.6.5+20231221-3"
        }
    ]
}