Zero-day vulnerability in macOS

Improper file permissions handling
CVE-2007-0117

Not patched

Vulnerability details

Advisory: SB2007010601 - Privilege escalation in Mac OS X

Vulnerable component: macOS

CVE-ID: CVE-2007-0117

CVSSv3 score: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:F/RL:U/RC:C

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Description:

The vulnerability allows a local user to escalation privileges on vulnerable system.

The vulnerability exists in diskutil tool within DiskManagement framework when handling BOM files. A local user can create a specially crafted BOM file, run diskutil with specially crafted BOM file and replace permissions for arbitrary files on vulnerable system.

Successful exploitation of this vulnerability allows a local unprivileged user to elevate his privileges and gain root access to vulnerable system.

Note: the vulnerability is being actively exploited.

Public Exploits:

- Apple Mac OSX 10.4.8 - DiskManagement BOM Privilege Escalation [Exploit-DB]

- Apple Mac OSX 10.4.8 - DiskManagement BOM (cron) Privilege Escalation [Exploit-DB]

External links:

https://jon.oberheide.org/moab/MOAB-05-01-2007.html
http://rixstep.com/2/2/20070810,00.shtml

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.