#VU10864 Improper input validation in Openstack Nova - CVE-2017-18191

Vulnerability identifier: #VU10864

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18191

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Openstack Nova
Client/Desktop applications / Other client software

Vendor: Openstack

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to insufficient handling of encrypted volumes. A local attacker can swap encrypted volumes, corrupt the LUKS headers and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Openstack Nova: 15.0.0 - 16.0.4

---

External links
https://review.openstack.org/#/c/539893/

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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