#VU242 Incorrect ACL get/set allowed on symlink path in Samba and Oracle Linux - CVE-2015-7560

Vulnerability identifier: #VU242

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2015-7560

CWE-ID: CWE-61

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Samba
Oracle Linux

Software vendor:
Samba
Oracle

The vulnerability allows a remote attacker to launch a symlink attack.

The vulnerability exists in Samba. A remote authenticated attacker can overwrite access control lists on the directory by creating a symbolic link to a file or directory using SMB1 UNIX extensions and then issuing a non-UNIX SMB1.

Successful exploitation of this vulnerability may result in a symlink attack.

Install Samba 4.4.0rc4, 4.3.6, 4.2.9 and 4.1.23.

• http://www-01.ibm.com/support/docview.wss?uid=swg21986595
• https://www.samba.org/samba/security/CVE-2015-7560.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html