Security Information / 2017 / Security Information -- DSA-3967-1 mbedtls

Debian Security Advisory

DSA-3967-1 mbedtls -- security update

Date Reported:

08 Sep 2017

Affected Packages:

mbedtls

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 873557.
In Mitre's CVE dictionary: CVE-2017-14032.

More information:

An authentication bypass vulnerability was discovered in mbed TLS, a lightweight crypto and SSL/TLS library, when the authentication mode is configured as optional. A remote attacker can take advantage of this flaw to mount a man-in-the-middle attack and impersonate an intended peer via an X.509 certificate chain with many intermediates.

For the stable distribution (stretch), this problem has been fixed in version 2.4.2-1+deb9u1.

For the testing distribution (buster), this problem has been fixed in version 2.6.0-1.

For the unstable distribution (sid), this problem has been fixed in version 2.6.0-1.

We recommend that you upgrade your mbedtls packages.