Advisory Details

May 22nd, 2018

Micro Focus Client for Open Enterprise Server Buffer Overflow Privilege Escalation Vulnerability

CVE ID	CVE-2018-7687
CVSS SCORE	6.9, AV:L/AC:M/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	Micro Focus
AFFECTED PRODUCTS	Client for Open Enterprise Server
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on vulnerable installations of Micro Focus Client for Open Enterprise Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of IOCTL 0x143CFB. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to escalate privilege to the level of SYSTEM.
ADDITIONAL DETAILS	Micro Focus has issued an update to correct this vulnerability. More details can be found at: https://www.novell.com/support/kb/doc.php?id=7022983
DISCLOSURE TIMELINE	2017-12-21 - Vulnerability reported to vendor 2018-05-22 - Coordinated public release of advisory 2018-05-22 - Advisory Updated
CREDIT	Steven Seeley of Source Incite

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