Severity by source
Local user able to edit a VPN profile (PR:L, AV:L) triggers root command execution via config injection, giving full host compromise (C/I/A:H); S:U as the OS boundary framing.
Lifecycle Timeline
1DescriptionCVE.org
[Incomplete fix of CVE-2018-10900]
AnalysisAI
Local privilege escalation in the NetworkManager VPNC plugin (network-manager-vpnc) lets a user who can create or modify a VPN connection profile inject newline/control characters into the generated vpnc configuration, causing a rogue directive such as 'Password helper' to be written and subsequently executed by the privileged helper when the connection is activated. The record is explicitly identified as an incomplete fix of CVE-2018-10900, meaning the original newline-injection vector was not fully neutralized, and exposure is limited to Linux hosts where the optional VPNC plugin is installed and the attacker already holds local rights to edit VPN settings. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access to a Linux system with the NetworkManager VPNC plugin (network-manager-vpnc) installed AND the ability to create or modify a VPN connection profile (typically permitted to the logged-in/console user via polkit). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Risk signals are almost entirely absent from the input: no CVSS score/vector, no CWE, no EPSS, no KEV flag, no POC indicator, and no SSVC data - the only anchors are the one-line description ('Incomplete fix of CVE-2018-10900') and an Ubuntu vendor report. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch status is not confirmed from the available data: the vendor-reported record does not include a fixed version, a patch reference, or a commit, so administrators should track the Ubuntu security notice referenced by the vendor:ubuntu report and apply the updated network-manager-vpnc package as soon as it is published - no exact fix version can be cited from the input and none should be assumed. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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