UBUNTU-CVE-2021-28041

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Source
https://ubuntu.com/security/CVE-2021-28041
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28041.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-28041
Related
Published
2021-03-05T21:15:00Z
Modified
2025-01-13T10:22:31Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.

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