The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4, when an AD DC is configured, allows remote authenticated users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from process memory by uploading a crafted DNS TXT record.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html | vendor advisory |
| https://www.samba.org/samba/security/CVE-2016-0771.html | vendor advisory |
| https://bugzilla.samba.org/show_bug.cgi?id=11128 | |
| https://bugzilla.samba.org/show_bug.cgi?id=11686 | |
| http://www.securityfocus.com/bid/84273 | vdb entry |
| http://www.ubuntu.com/usn/USN-2922-1 | vendor advisory |
| http://www.debian.org/security/2016/dsa-3514 | vendor advisory |
| http://www.securitytracker.com/id/1035219 | vdb entry |