SB2019010825 - Multiple vulnerabilities in Microsoft Word

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2019-0561)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to improper usage of Microsoft Word macro buttons. A remote attacker can create a specially crafted Microsoft Word file, trick the victim into opening it and read contents of arbitrary file on the system.

Successful exploitation of the vulnerability requires knowledge of the exact location of the file.

2) Buffer overflow (CVE-ID: CVE-2019-0585)

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

The vulnerability exists due to a boundary error when processing Microsoft Word files. A remote attacker can create a specially crafted Word 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.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0561
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0585