PT-2016-6076 · Apple · Os X

Yubin Fu · Published 2016-07-20 · Updated 2017-09-01 · CVE-2016-4639

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Description The issue is related to the Login Window in Apple OS X, where it does not properly initialize memory. This allows local users to cause a denial of service via unspecified vectors. The problem is also described as a WindowServer Memory Corruption Privilege Escalation issue.

Recommendations For 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 Login Window to minimize the risk of exploitation.

Fix

Related Identifiers

CVE-2016-4639

ZDI-16-431

Affected Products

Os X

References · 8

• https://zerodayinitiative.com/advisories/ZDI-16-431 · Security Note
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-4639 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-4639 · Security Note
• https://support.apple.com/HT206903 · Vendor Advisory
• http://securityfocus.com/bid/91824 · Note
• http://securitytracker.com/id/1036348 · Note
• http://zerodayinitiative.com/advisories/ZDI-16-431 · Note