Heap-based buffer over-read in Rsync - CVE-2017-16548
Published: December 22, 2017
Vulnerability identifier: #VU9720
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-16548
CWE-ID: CWE-126
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Rsync
Rsync
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to the receive_xattr function in xattrs.c does not check for a trailing '' character in an xattr name. A remote attacker can send specially crafted data to the daemon, trigger heap-based buffer over-read and cause the application to crash.
The weakness exists due to the receive_xattr function in xattrs.c does not check for a trailing '' character in an xattr name. A remote attacker can send specially crafted data to the daemon, trigger heap-based buffer over-read and cause the application to crash.
How to mitigate CVE-2017-16548
Install update from vendor's website.