UBUNTU-CVE-2020-23856

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Source
https://ubuntu.com/security/CVE-2020-23856
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-23856.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-23856
Upstream
Published
2021-05-18T15:15:00Z
Modified
2025-10-24T04:48:40Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee.

References

Affected packages

Ubuntu:20.04:LTS

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.6-4?arch=source&distro=focal

Affected ranges

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

Affected versions

1:1.*

1:1.6-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.6-4",
            "binary_name": "cflow"
        },
        {
            "binary_version": "1:1.6-4",
            "binary_name": "cflow-l10n"
        }
    ]
}

Ubuntu:22.04:LTS

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.7-2?arch=source&distro=jammy

Affected ranges

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

Affected versions

1:1.*

1:1.6-4
1:1.6-6
1:1.7-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.7-2",
            "binary_name": "cflow"
        },
        {
            "binary_version": "1:1.7-2",
            "binary_name": "cflow-l10n"
        }
    ]
}

Ubuntu:24.04:LTS

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.7-5?arch=source&distro=noble

Affected ranges

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

Affected versions

1:1.*

1:1.7-4
1:1.7-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.7-5",
            "binary_name": "cflow"
        },
        {
            "binary_version": "1:1.7-5",
            "binary_name": "cflow-l10n"
        }
    ]
}

Ubuntu:25.04

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.7-5?arch=source&distro=plucky

Affected ranges

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

Affected versions

1:1.*

1:1.7-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.7-5",
            "binary_name": "cflow"
        },
        {
            "binary_version": "1:1.7-5",
            "binary_name": "cflow-l10n"
        }
    ]
}

Ubuntu:25.10

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.8-1?arch=source&distro=questing

Affected ranges

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

Affected versions

1:1.*

1:1.7-5
1:1.8-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.8-1",
            "binary_name": "cflow"
        },
        {
            "binary_version": "1:1.8-1",
            "binary_name": "cflow-l10n"
        }
    ]
}

Ubuntu:Pro:16.04:LTS

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.4+dfsg1-3ubuntu1.16.04.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

1:1.*

1:1.4+dfsg1-3ubuntu1
1:1.4+dfsg1-3ubuntu1.16.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.4+dfsg1-3ubuntu1.16.04.1~esm1",
            "binary_name": "cflow"
        }
    ]
}

Ubuntu:Pro:18.04:LTS

cflow

Package

Name
cflow
Purl
pkg:deb/ubuntu/cflow@1:1.4+dfsg1-3ubuntu1.18.04.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1:1.*

1:1.4+dfsg1-3ubuntu1
1:1.4+dfsg1-3ubuntu1.18.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.4+dfsg1-3ubuntu1.18.04.1~esm1",
            "binary_name": "cflow"
        }
    ]
}