PT-2021-3013 · Microsoft · Office+1

Kdot · Published 2021-02-26 · Updated 2023-08-02 · CVE-2021-31176

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

Description The issue is related to incorrect code generation management during the syntactic analysis of XLS files in Microsoft Office and Microsoft Office Web Apps. This can be exploited by an attacker to execute arbitrary code using a specially crafted malicious file or a specially formed malicious web page.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Use After Free

Code Injection

Weakness Enumeration

CWE-416

CWE-94

Related Identifiers

BDU:2021-02615

CVE-2021-31176

ZDI-21-575

Affected Products

Office

Office Web Apps

References · 11

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31176 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-575 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-31176 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31176 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02615 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31176 · Vendor Advisory
• https://t.me/cvenotify/14587 · Telegram Post
• https://t.me/cvenotify/14402 · Telegram Post
• https://t.me/cvenotify/14406 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021051110 · Note
• https://t.me/cvenotify/14405 · Telegram Post