PT-2023-4297 · Microsoft · Exchange Server

Steve Walker · Published 2023-08-08 · Updated 2024-10-14 · CVE-2023-21709

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

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

Description The issue is related to an elevation of privilege vulnerability in Microsoft Exchange Server, which can be exploited by a remote attacker to elevate their privileges. This vulnerability is associated with insufficient access controls. There have been reports of this issue being actively exploited.

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

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

CWE-264

Related Identifiers

BDU:2023-04617

CVE-2023-21709

Affected Products

Exchange Server

References · 32

• https://bdu.fstec.ru/vul/2023-04617 · Security Note
• https://osv.dev/vulnerability/CVE-2023-21709 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21709 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21709 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-21709 · Security Note
• https://twitter.com/transilienceai/status/1845455426697166985 · Twitter Post
• https://twitter.com/pcasano/status/1689626428483231744 · Twitter Post
• https://twitter.com/vivekgolani/status/1690716092182982656 · Twitter Post
• https://twitter.com/transilienceai/status/1845819099835732149 · Twitter Post
• https://twitter.com/AlicePintori/status/1689646646320418816 · Twitter Post
• https://twitter.com/kawn2020/status/1689098238643834880 · Twitter Post
• https://twitter.com/MarioMonteiroJr/status/1691091371124568065 · Twitter Post
• https://twitter.com/EurekaBerry/status/1689103761237778432 · Twitter Post
• https://twitter.com/transilienceai/status/1843837034261049713 · Twitter Post
• https://twitter.com/ZinoVersluys/status/1700042476688683317 · Twitter Post