Multiple vulnerabilities in Apple macOS



Published: 2019-10-07 | Updated: 2021-05-19
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-8756
CVE-2019-8749
CVE-2019-8592
CVE-2019-8509
CWE-ID CWE-119
CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
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macOS
Operating systems & Components / Operating system

Vendor Apple Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU53345

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-8756

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in libxml2 implementation. A remote attacker can create a specially crafted XML document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

macOS: 10.13 17A365, 10.13 17A405, 10.13.1 17B48, 10.13.1 17B1002, 10.13.1 17B1003, 10.13.2 17C88, 10.13.2 17C89, 10.13.2 17C205, 10.13.2 17C2205, 10.13.3 17D47, 10.13.3 17D102, 10.13.3 17D2047, 10.13.3 17D2102, 10.13.4 17E199, 10.13.4 17E202, 10.13.5 17F77, 10.13.6 17G66, 10.13.6 17G2208, 10.13.6 17G3025, 10.13.6 17G4015, 10.13.6 17G5019, 10.13.6 17G6029, 10.13.6 17G6030, 10.13.6 17G7024, 10.13.6 17G8029, 10.13.6 17G8030, 10.13.6 17G8037, 10.14 18A391, 10.14.1 18B75, 10.14.1 18B2107, 10.14.1 18B3094, 10.14.2 18C54, 10.14.3 18D42, 10.14.3 18D43, 10.14.3 18D109, 10.14.4 18E226, 10.14.4 18E227, 10.14.5 18F132, 10.14.6 18G84, 10.14.6 18G87, 10.14.6 18G95, 10.14.6 18G103

CPE2.3 External links

http://support.apple.com/en-us/HT210722
http://support.apple.com/en-us/HT210634

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU53344

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-8749

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in libxml2 implementation. A remote attacker can create a specially crafted XML document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

macOS: 10.13 17A365, 10.13 17A405, 10.13.1 17B48, 10.13.1 17B1002, 10.13.1 17B1003, 10.13.2 17C88, 10.13.2 17C89, 10.13.2 17C205, 10.13.2 17C2205, 10.13.3 17D47, 10.13.3 17D102, 10.13.3 17D2047, 10.13.3 17D2102, 10.13.4 17E199, 10.13.4 17E202, 10.13.5 17F77, 10.13.6 17G66, 10.13.6 17G2208, 10.13.6 17G3025, 10.13.6 17G4015, 10.13.6 17G5019, 10.13.6 17G6029, 10.13.6 17G6030, 10.13.6 17G7024, 10.13.6 17G8029, 10.13.6 17G8030, 10.13.6 17G8037, 10.14 18A391, 10.14.1 18B75, 10.14.1 18B2107, 10.14.1 18B3094, 10.14.2 18C54, 10.14.3 18D42, 10.14.3 18D43, 10.14.3 18D109, 10.14.4 18E226, 10.14.4 18E227, 10.14.5 18F132, 10.14.6 18G84, 10.14.6 18G87, 10.14.6 18G95, 10.14.6 18G103

CPE2.3 External links

http://support.apple.com/en-us/HT210722
http://support.apple.com/en-us/HT210634

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Buffer overflow

EUVDB-ID: #VU53335

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-8592

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing media files within the CoreAudio subsystem. A remote attacker can create a specially crafted media file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

macOS: 10.13 17A365, 10.13 17A405, 10.13.1 17B48, 10.13.1 17B1002, 10.13.1 17B1003, 10.13.2 17C88, 10.13.2 17C89, 10.13.2 17C205, 10.13.2 17C2205, 10.13.3 17D47, 10.13.3 17D102, 10.13.3 17D2047, 10.13.3 17D2102, 10.13.4 17E199, 10.13.4 17E202, 10.13.5 17F77, 10.13.6 17G66, 10.13.6 17G2208, 10.13.6 17G3025, 10.13.6 17G4015, 10.13.6 17G5019, 10.13.6 17G6029, 10.13.6 17G6030, 10.13.6 17G7024, 10.13.6 17G8029, 10.13.6 17G8030, 10.13.6 17G8037, 10.14 18A391, 10.14.1 18B75, 10.14.1 18B2107, 10.14.1 18B3094, 10.14.2 18C54, 10.14.3 18D42, 10.14.3 18D43, 10.14.3 18D109, 10.14.4 18E226, 10.14.4 18E227, 10.14.5 18F132, 10.14.6 18G84, 10.14.6 18G87, 10.14.6 18G95, 10.14.6 18G103, 10.15 19A583, 10.15 19A602, 10.15 19A603

CPE2.3 External links

http://support.apple.com/en-us/HT210722
http://support.apple.com/en-us/HT210634

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Security restrictions bypass

EUVDB-ID: #VU53334

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-8509

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

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in File Quarantine subsystem, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

macOS: 10.13 17A365, 10.13 17A405, 10.13.1 17B48, 10.13.1 17B1002, 10.13.1 17B1003, 10.13.2 17C88, 10.13.2 17C89, 10.13.2 17C205, 10.13.2 17C2205, 10.13.3 17D47, 10.13.3 17D102, 10.13.3 17D2047, 10.13.3 17D2102, 10.13.4 17E199, 10.13.4 17E202, 10.13.5 17F77, 10.13.6 17G66, 10.13.6 17G2208, 10.13.6 17G3025, 10.13.6 17G4015, 10.13.6 17G5019, 10.13.6 17G6029, 10.13.6 17G6030, 10.13.6 17G7024, 10.13.6 17G8029, 10.13.6 17G8030, 10.13.6 17G8037, 10.14 18A391, 10.14.1 18B75, 10.14.1 18B2107, 10.14.1 18B3094, 10.14.2 18C54, 10.14.3 18D42, 10.14.3 18D43, 10.14.3 18D109, 10.14.4 18E226, 10.14.4 18E227, 10.14.5 18F132, 10.14.6 18G84, 10.14.6 18G87, 10.14.6 18G95, 10.14.6 18G103, 10.15 19A583, 10.15 19A602, 10.15 19A603

CPE2.3 External links

http://support.apple.com/en-us/HT210722
http://support.apple.com/en-us/HT210634

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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