Ubuntu update for nova

1) External Control of File Name or Path

EUVDB-ID: #VU71714

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-47951

CWE-ID: CWE-73 - External Control of File Name or Path

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to application allows an attacker to control path of the files when processing VMDK flat images. A remote user can create a specially crafted VMDK flat image that references a specific backing file path and convince systems to return a copy of that file's contents from the server, resulting in unauthorized access to potentially sensitive data.

Mitigation

Update the affected package nova to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.10

python3-nova (Ubuntu package): before 3:26.1.0-0ubuntu1

nova-common (Ubuntu package): before 3:26.1.0-0ubuntu1

External links

http://ubuntu.com/security/notices/USN-5835-3

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.