Security restrictions bypass in Microsoft Exchange Server

Published: 2018-12-11 | Updated: 2018-12-11
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2018-8604
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Microsoft Exchange Server Subscribe
Vendor Microsoft

Security Advisory

This security advisory describes one low risk vulnerability.

1) Input validation error

Severity: Low

CVSSv3: 3.8 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8604

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote authenticated attacker to tamper data of other users.

The vulnerability exists due to insufficient validation of user-supplied input when processing user profile data. A remote authenticated attacker can send a specially crafted request to the server and modify target user's profile.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Exchange Server: 2016 Cumulative Update 10, 2016 Cumulative Update 11

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8604

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.