#VU13999 Privilege escalation in vpnc - CVE-2018-10900

Vulnerability identifier: #VU13999

Vulnerability risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2018-10900

CWE-ID: CWE-77

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
vpnc
Web applications / Modules and components for CMS

Vendor: Gnome Development Team

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to a newline character can be used to inject a Password helper parameter into the configuration data passed to vpnc. A local attacker can modify a system connection to execute arbitrary commands as root.

Mitigation
Update to version 1.2.6.

Vulnerable software versions

vpnc: 1.2.4

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10900

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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. However, a fully functional exploit for this vulnerability is available.