Detections
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Ubuntu 22.04 LTS : OpenStack Keystone vulnerabilities (USN-7926-1)

high Nessus Plugin ID 278510

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7926-1 advisory.

 Kay discovered that OpenStack Keystone incorrectly handled the ec2tokens and s3tokens APIs. A remote attacker could possibly use this issue to obtain unauthorized access and escalate privileges.
 (CVE-2025-65073)

 It was discovered that OpenStack Keystone only validated the first 72 bytes of an application secret. An attacker could possibly use this issue to bypass password complexity. (CVE-2021-3563)

 It was discovered that OpenStack Keystone had a time lag before a token should be revoked by the security policy. A remote administrator could use this issue to maintain access for longer than expected.
 (CVE-2022-2447)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected keystone, keystone-common and / or python3-keystone packages.

See Also

https://ubuntu.com/security/notices/USN-7926-1

Plugin Details

Severity: High

ID: 278510

File Name: ubuntu_USN-7926-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/12/2025

Updated: 12/12/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2021-3563

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:keystone, p-cpe:/a:canonical:ubuntu_linux:python3-keystone, p-cpe:/a:canonical:ubuntu_linux:keystone-common

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/11/2025

Vulnerability Publication Date: 8/26/2022

Reference Information

CVE: CVE-2021-3563, CVE-2022-2447, CVE-2025-65073

USN: 7926-1