[Secure-testing-team] Bug#883665: rsync: CVE-2017-17434

[Salvatore Bonaccorso]

Source: rsync
Version: 3.1.2-2
Severity: important
Tags: patch security upstream

Hi,

the following vulnerability was published for rsync.

CVE-2017-17434[0]:
| The daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03,
| does not check for fnamecmp filenames in the daemon_filter_list data
| structure (in the recv_files function in receiver.c) and also does not
| apply the sanitize_paths protection mechanism to pathnames found in
| "xname follows" strings (in the read_ndx_and_attrs function in
| rsync.c), which allows remote attackers to bypass intended access
| restrictions.

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-2017-17434
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17434
[1] https://git.samba.org/?p=rsync.git;a=commit;h=5509597decdbd7b91994210f700329d8a35e70a1
[2] https://git.samba.org/?p=rsync.git;a=commit;h=70aeb5fddd1b2f8e143276f8d5a085db16c593b9

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore