SB2020102713 - Multiple vulnerabilities in Trend Micro Antivirus for Mac

Description

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2020-27015)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the error message that includes sensitive information within the KERedirect kext. A local administrator can gain unauthorized access to sensitive information on the system.

2) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2020-27014)

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to the lack of proper locking when performing operations on an object within the KERedirect kext. A local administrator can escalate privileges and execute arbitrary code in the context of the kernel.

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-20-1286/
• https://helpcenter.trendmicro.com/en-us/article/TMKA-09975
• https://www.zerodayinitiative.com/advisories/ZDI-20-1285/
• https://helpcenter.trendmicro.com/en-us/article/TMKA-09974