Information disclosure in Microsoft Exchange and related products
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-1084 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Microsoft Office Client/Desktop applications / Office applications Microsoft Office for macOS Client/Desktop applications / Office applications Microsoft Outlook Client/Desktop applications / Office applications Skype for Business Client/Desktop applications / Messaging software Microsoft Lync Client/Desktop applications / Messaging software Microsoft Exchange Server Server applications / Mail servers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU19080
Risk: Low
CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-1084
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of display names that contain non-printable characters. A remote authenticated attacker can change his/her display name, perform spoofing attack against Microsoft Exchange users and gain access to sensitive information.
Install updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 365 ProPlus - 2019 for Mac
Microsoft Office for macOS: 2016
Microsoft Outlook: 2010 Service Pack 2 - 2016
Skype for Business: 2016
Microsoft Lync: 2013
Microsoft Exchange Server: 2010 - 2019 Cumulative Update 2 15.02.0397.003
CPE2.3- cpe:2.3:a:microsoft:microsoft_office:365_ProPlus:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:2013_RT:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office:2019_for_Mac:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_office_for_mac:2016:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_outlook:2010_Service_Pack_2:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_outlook:2013_Service_Pack_1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_outlook:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:skype_for_business:2016:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_lync:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_exchange_server:*:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084
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 trick the victim to visit a specially crafted website or open a file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
