USN-8995-1

Source
https://ubuntu.com/security/notices/USN-8995-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8995-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8995-1
Upstream
CVE (2)
Related
Published
2026-11-03T17:16:06Z
Modified
2026-11-04T03:43:15Z
Summary
yaws vulnerabilities
Details

It was discovered that Yaws did not properly sanitize XML input in its WebDAV implementation. A remote attacker could possibly use this issue to perform XML external entity injection attacks. (CVE-2020-24379)

It was discovered that Yaws mishandled certain input when running CGI scripts. A remote attacker could possibly use this issue to execute arbitrary commands. (CVE-2020-24916)

References

Affected packages

Ubuntu:Pro:16.04:LTS / yaws

Package

Name
yaws
Purl
pkg:deb/ubuntu/yaws?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.2-1ubuntu0.1~esm1

Affected versions

1.*
1.98-5
1.99-1
1.99-2
2.*
2.0.2-1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "erlang-yapp",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "erlang-yaws",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-chat",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-mail",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-wiki",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-yapp",
            "binary_version": "2.0.2-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map
{
    "cves": [
        {
            "id": "CVE-2020-24379",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2020-24916",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8995-1.json"

Ubuntu:Pro:20.04:LTS / yaws

Package

Name
yaws
Purl
pkg:deb/ubuntu/yaws?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.7+dfsg-1ubuntu0.1~esm1

Affected versions

2.*
2.0.6+dfsg-1
2.0.6+dfsg-3
2.0.7+dfsg-1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "erlang-yapp",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "erlang-yaws",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-chat",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-mail",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-wiki",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "yaws-yapp",
            "binary_version": "2.0.7+dfsg-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map
{
    "cves": [
        {
            "id": "CVE-2020-24379",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2020-24916",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8995-1.json"