USN-4762-1

It was discovered that the OpenSSH ssh-agent incorrectly handled memory. A remote attacker able to connect to the agent could use this issue to cause it to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:20.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:8.2p1-4ubuntu0.2

Affected versions

1:8.*

1:8.0p1-6build1

1:8.1p1-1

1:8.1p1-5

1:8.2p1-4

1:8.2p1-4ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "openssh-client",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        },
        {
            "binary_name": "openssh-server",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        },
        {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        },
        {
            "binary_name": "openssh-tests",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        },
        {
            "binary_name": "ssh",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        },
        {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:8.2p1-4ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4762-1.json"

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-28041",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}