[Secure-testing-team] Bug#862442: tnef: CVE-2017-8911: integer underflow in unicode_to_utf8

[Salvatore Bonaccorso]

Source: tnef
Version: 1.4.12-1.1
Severity: important
Tags: security upstream
Forwarded: https://github.com/verdammelt/tnef/issues/23

Hi,

the following vulnerability was published for tnef.

CVE-2017-8911[0]:
| An integer underflow has been identified in the unicode_to_utf8()
| function in tnef 1.4.14. This might lead to invalid write operations,
| controlled by an attacker.

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-2017-8911
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8911
[1] https://github.com/verdammelt/tnef/issues/23

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore