Vulnerability Details : CVE-2017-17434
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.
Products affected by CVE-2017-17434
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-17434
0.98%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-17434
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2017-17434
-
https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html
[SECURITY] [DLA 1218-1] rsync security update
-
https://git.samba.org/?p=rsync.git;a=commit;h=5509597decdbd7b91994210f700329d8a35e70a1
git.samba.org - rsync.git/commitPatch
-
http://security.cucumberlinux.com/security/details.php?id=170
CLD-170 DetailsThird Party Advisory
-
https://www.debian.org/security/2017/dsa-4068
Debian -- Security Information -- DSA-4068-1 rsyncThird Party Advisory
-
https://git.samba.org/?p=rsync.git;a=commit;h=70aeb5fddd1b2f8e143276f8d5a085db16c593b9
git.samba.org - rsync.git/commitPatch
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