CVE-2016-3698
First published: Mon Jun 13 2016(Updated: )
libndp before 1.6, as used in NetworkManager, does not properly validate the origin of Neighbor Discovery Protocol (NDP) messages, which allows remote attackers to conduct man-in-the-middle attacks or cause a denial of service (network connectivity disruption) by advertising a node as a router from a non-local network.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.2 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Server | =7.2 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| SUSE Libndp | <=1.5 | |
| Debian Linux | =8.0 | |
| Ubuntu | =15.10 | |
| Ubuntu | =16.04 |
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Reference Links
- http://www.debian.org/security/2016/dsa-3581
- http://www.openwall.com/lists/oss-security/2016/05/17/9
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.ubuntu.com/usn/USN-2980-1
- https://github.com/jpirko/libndp/commit/2af9a55b38b55abbf05fd116ec097d4029115839
- https://github.com/jpirko/libndp/commit/a4892df306e0532487f1634ba6d4c6d4bb381c7f
- https://rhn.redhat.com/errata/RHSA-2016-1086.html
Frequently Asked Questions
What is the severity of CVE-2016-3698?
CVE-2016-3698 is classified as important due to its potential to allow man-in-the-middle attacks and network connectivity disruption.
How do I fix CVE-2016-3698?
To mitigate CVE-2016-3698, update libndp to version 1.6 or later which correctly validates Neighbor Discovery Protocol messages.
What are the affected software versions for CVE-2016-3698?
CVE-2016-3698 affects libndp versions up to 1.5 and multiple Red Hat Enterprise Linux and Ubuntu versions.
What types of attacks can CVE-2016-3698 lead to?
CVE-2016-3698 can lead to man-in-the-middle attacks and denial of service by improperly handled Neighbor Discovery Protocol messages.
Who is at risk for CVE-2016-3698 vulnerabilities?
Users of affected systems, particularly those using outdated versions of libndp on Red Hat or Ubuntu distributions, are at risk for CVE-2016-3698.
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- source/MITRE
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