Out-of-bounds read in macOS - CVE-2018-4338

Vulnerability identifier: #VU15513

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-4338

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.

The weakness exists on systems with Wi-Fi is enabled due to stack value by OOB Read is stored in the ol_nd_hostip variable when the setOFFLOAD_NDP function does not check the input value. A local attacker can use the dlsym function to /System/Library/PrivateFrameworks/Apple80211.framework/Apple80211, which yields Apple80211Open, Apple80211BindToInterface, and Apple80211Close functions, trigger out-of-bounds read and obtain a kernel address for privilege escalation in the Apple OS X local environment.

macOS

Update to version 10.14.

macOS - update to 10.14 18A391

• https://www.thezdi.com/blog/2018/10/24/cve-2018-4338-triggering-an-information-disclosure-on-macos-t...

• Multiple vulnerabilities in Apple MacOS