USN-4891-1

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Source
https://ubuntu.com/security/notices/USN-4891-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4891-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4891-1
Upstream
Related
Published
2021-03-25T14:29:46.156172Z
Modified
2025-10-13T04:35:26Z
Summary
openssl vulnerability
Details

It was discovered that OpenSSL incorrectly handled certain renegotiation ClientHello messages. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:18.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.1.1-1ubuntu2.1~18.04.9?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.1-1ubuntu2.1~18.04.9

Affected versions

1.*

1.0.2g-1ubuntu13
1.0.2g-1ubuntu14
1.0.2n-1ubuntu1
1.1.0g-2ubuntu1
1.1.0g-2ubuntu2
1.1.0g-2ubuntu3
1.1.0g-2ubuntu4
1.1.0g-2ubuntu4.1
1.1.0g-2ubuntu4.3
1.1.1-1ubuntu2.1~18.04.1
1.1.1-1ubuntu2.1~18.04.2
1.1.1-1ubuntu2.1~18.04.3
1.1.1-1ubuntu2.1~18.04.4
1.1.1-1ubuntu2.1~18.04.5
1.1.1-1ubuntu2.1~18.04.6
1.1.1-1ubuntu2.1~18.04.7
1.1.1-1ubuntu2.1~18.04.8

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl-dev",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.9"
        },
        {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.9"
        },
        {
            "binary_name": "openssl",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.9"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-3449",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}

Ubuntu:20.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.1f-1ubuntu2.3

Affected versions

1.*

1.1.1c-1ubuntu4
1.1.1d-2ubuntu3
1.1.1d-2ubuntu6
1.1.1f-1ubuntu1
1.1.1f-1ubuntu2
1.1.1f-1ubuntu2.1
1.1.1f-1ubuntu2.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssl-dev",
            "binary_version": "1.1.1f-1ubuntu2.3"
        },
        {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1f-1ubuntu2.3"
        },
        {
            "binary_name": "openssl",
            "binary_version": "1.1.1f-1ubuntu2.3"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-3449",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}