CVE-2017-17434

Publication date 5 December 2017

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rsync	17.10 artful	Fixed 3.1.2-2ubuntu0.1
	17.04 zesty	Fixed 3.1.2-1ubuntu0.1
	16.04 LTS xenial	Fixed 3.1.1-3ubuntu1.1
	14.04 LTS trusty	Fixed 3.1.0-2ubuntu0.3

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
rsync	Other: https://git.samba.org/?p=rsync.git;a=commit;h=5509597decdbd7b91994210f700329d8a35e70a1 Other: https://git.samba.org/?p=rsync.git;a=commit;h=70aeb5fddd1b2f8e143276f8d5a085db16c593b9

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3506-2
rsync vulnerabilities
7 December 2017

USN-3506-1
rsync vulnerabilities
7 December 2017

Other references

https://www.cve.org/CVERecord?id=CVE-2017-17434