SB2019111211 - Multiple vulnerabilities in Microsoft Office
Published: November 12, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2019-1446)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing untrusted data. A remote attacker can create a specially crafted Excel file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
2) Input validation error (CVE-ID: CVE-2019-1448)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Excel software. Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Excel.
3) Out-of-bounds read (CVE-ID: CVE-2019-1402)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain access to sensitive information on the target system.
The vulnerability exists due to a boundary error when Microsoft Office improperly handles objects in memory. A remote attacker can use a specially crafted document to trigger memory corruption and obtain sensitive information on the target system.
Remediation
Install update from vendor's website.