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Gentoo Linux Security Advisory GLSA 201808-03 |
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https://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: NetworkManager VPNC plugin: Privilege escalation |
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Date: August 22, 2018 |
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Bugs: #661712 |
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ID: 201808-03 |
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|
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Synopsis |
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======== |
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|
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A vulnerability in NetworkManager VPNC plugin allows local users to |
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escalate privileges. |
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|
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Background |
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========== |
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|
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NetworkManager is an universal network configuration daemon for |
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laptops, desktops, servers and virtualization hosts. |
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|
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The VPNC plugin provides easy access Cisco Concentrator based VPN's |
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utilizing NetworkManager. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/networkmanager-vpnc |
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< 1.2.6 >= 1.2.6 |
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|
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Description |
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=========== |
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|
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When initiating a VPNC connection, NetworkManager spawns a new vpnc |
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process and passes the configuration via STDIN. By injecting a special |
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character into a configuration parameter, an attacker can coerce |
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NetworkManager to set the Password helper option to an attacker |
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controlled executable file. |
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|
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Impact |
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====== |
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|
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A local attacker is able to escalate privileges via a specially crafted |
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configuration file. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All NetworkManager VPNC plugin users should upgrade to the latest |
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version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot -v ">=net-misc/networkmanager-vpnc-1.2.6" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2018-10900 |
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https://nvd.nist.gov/vuln/detail/CVE-2018-10900 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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|
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https://security.gentoo.org/glsa/201808-03 |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2018 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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https://creativecommons.org/licenses/by-sa/2.5 |