CVE-2017-16548 Information

Description

The receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not check for a trailing ‘\0’ character in an xattr name which allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) or possibly have unspecified other impact by sending crafted data to the daemon.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://bugzilla.samba.org/show_bug.cgi?id=13112 https://git.samba.org/rsync.git/?p=rsync.git;a=commit;h=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1 https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html https://usn.ubuntu.com/3543-1/ https://usn.ubuntu.com/3543-2/ https://www.debian.org/security/2017/dsa-4068

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8