CVE-2017-17434

Description

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.

9.8

CVSS

Severity: Critical

CVSS 3.0 •

CVSS 2.0 •

EPSS 1.22% Top 25%

Vendor Advisory debian.org

Affected: n/a n/a

References

Link	Tags
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=70aeb5fddd1b2f8e143276f8d5a085db16c593b9
http://security.cucumberlinux.com/security/details.php?id=170	third party advisory
https://www.debian.org/security/2017/dsa-4068	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html	mailing list
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=5509597decdbd7b91994210f700329d8a35e70a1

Frequently Asked Questions

What is the severity of CVE-2017-17434?: CVE-2017-17434 has been scored as a critical severity vulnerability.
How to fix CVE-2017-17434?: To fix CVE-2017-17434, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17434 being actively exploited in the wild?: It is possible that CVE-2017-17434 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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