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Debian Security Advisory DSA-4312-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
October 08, 2018                      https://www.debian.org/security/faq
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Package        : tinc
CVE ID         : CVE-2018-16738 CVE-2018-16758

Several vulnerabilities were discovered in tinc, a Virtual Private
Network (VPN) daemon. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2018-16738

    Michael Yonli discovered a flaw in the implementation of the
    authentication protocol that could allow a remote attacker to
    establish an authenticated, one-way connection with another node.

CVE-2018-16758

    Michael Yonli discovered that a man-in-the-middle that has
    intercepted a TCP connection might be able to disable encryption of
    UDP packets sent by a node.

For the stable distribution (stretch), these problems have been fixed in
version 1.0.31-1+deb9u1.

We recommend that you upgrade your tinc packages.

For the detailed security status of tinc please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/tinc

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org