Bug#859277: bzrtp: CVE-2016-6271: missing HVI check on DHPart2 packet reception

[Salvatore Bonaccorso]

Source: bzrtp
Version: 1.0.2-1.1
X-Debbugs-CC: team at security.debian.org secure-testing-team at lists.alioth.debian.org
Severity: important
Tags: security

Hi,

the following vulnerability was published for bzrtp.

CVE-2016-6271[0]:
| The Bzrtp library (aka libbzrtp) 1.0.x before 1.0.4 allows
| man-in-the-middle attackers to conduct spoofing attacks by leveraging
| a missing HVI check on DHPart2 packet reception.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2016-6271
[1] https://github.com/BelledonneCommunications/bzrtp/commit/bbb1e6e2f467ee4bd7b9a8c800e4f07343d7d99b

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore