Bug#856266: vim: CVE-2017-6349 CVE-2017-6350

[Salvatore Bonaccorso]

Source: vim
Version: 2:7.4.488-7
Severity: important
Tags: patch upstream security

Hi,

the following vulnerabilities were published for vim.

CVE-2017-6349[0]:
| An integer overflow at a u_read_undo memory allocation site would occur
| for vim before patch 8.0.0377, if it does not properly validate values
| for tree length when reading a corrupted undo file, which may lead to
| resultant buffer overflows.

CVE-2017-6350[1]:
| An integer overflow at an unserialize_uep memory allocation site would
| occur for vim before patch 8.0.0378, if it does not properly validate
| values for tree length when reading a corrupted undo file, which may
| lead to resultant buffer overflows.

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

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-6349
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6349
[1] https://security-tracker.debian.org/tracker/CVE-2017-6350
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6350

Please adjust the affected versions in the BTS as needed.

I would tend to say this is no-dsa (and thus scheduling a fix for
jessie via a point release), but it would be good to have the fix
straight to stretch as well.

Regards,
Salvatore