PT-2016-6077 · Apple · Os X

Yubin Fu · Published 2016-07-20 · Updated 2017-09-01 · CVE-2016-4640

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Apple OS X versions prior to 10.11.6

Description The issue allows attackers to execute arbitrary code in a privileged context, obtain sensitive user information, or cause a denial of service due to memory corruption via a crafted app. It is related to a heap-buffer overflow and memory corruption in the WindowServer, specifically in the XRegisterCursorWithData function.

Recommendations For Apple OS X versions prior to 10.11.6, update to version 10.11.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the WindowServer to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2016-4640

ZDI-16-435

ZDI-16-638

Affected Products

Os X

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2016-4640 · Security Note
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-16-638 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-16-435 · Security Note
• https://osv.dev/vulnerability/CVE-2016-4640 · Vendor Advisory
• https://support.apple.com/HT206903 · Vendor Advisory
• http://securityfocus.com/bid/91824 · Note
• http://securitytracker.com/id/1036348 · Note
• http://zerodayinitiative.com/advisories/ZDI-16-435 · Note