Improper access control in Openstack Octavia



Published: 2019-05-27 | Updated: 2019-06-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3895
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Octavia
Server applications / Other server solutions

Vendor Openstack

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU18664

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-3895

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions within "_extract_amp_image_id_by_tag" in "octavia/compute/drivers/nova_driver.py" that does not filter images and used images owned by pre-defined tenant. A remote non-privileged user can tag an image with the 'amphora' tag and set it to "public=true" to gain unauthorized access to lb-mgmt network.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Octavia: 0.8.0 - 0.8.1

External links

http://bugs.launchpad.net/octavia/+bug/1620629


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.



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