PT-2018-2027 · Microsoft · Office 365 Proplus+2

Nathan Shomber · Published 2018-12-11 · Updated 2020-08-24 · CVE-2018-8636

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Excel (affected versions not specified) Office 365 ProPlus (affected versions not specified) Microsoft Office (affected versions not specified)

Description A remote code execution issue exists in Microsoft Excel due to improper handling of objects in memory. This allows a remote attacker to execute arbitrary code in the context of the current user by using a specially crafted file. If the user has administrative rights, the attacker could gain control of the system, install programs, view or modify data, or create new accounts with full rights. The impact is reduced for users with limited rights.

Recommendations For Microsoft Excel, consider avoiding the use of specially crafted files until a fix is available. For Office 365 ProPlus, restrict access to potentially vulnerable components until an update is applied. For Microsoft Office, as a temporary workaround, consider disabling the ability to open specially crafted files in Microsoft Excel until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2018-01643

CVE-2018-8636

Affected Products

Office Excel

Office

Office 365 Proplus

References · 7

• https://bdu.fstec.ru/vul/2018-01643 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-8636 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8636 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-8636 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8636 · Security Note
• http://securityfocus.com/bid/106101 · Note
• https://vuldb.com/?id.127805 · Note