Information disclosure in OpenConnect VPN client

1) Cleartext storage of sensitive information

EUVDB-ID: #VU28218

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20319

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

Exploit availability: No

Description

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

The vulnerability exists due to OpenConnect VPN client stores credentials in an insecure manner in memory. A local user can read credentials from memory in plain text.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenConnect VPN Client: 0.90 - 7.08

External links

http://labs.nettitude.com/blog/why-you-should-always-have-two-factor-authentication-on-your-vpn-cve-2018-20319/
http://www.infradead.org/openconnect/changelog.html

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.