Multiple vulnerabilities in Microsoft Outlook
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-33151 CVE-2023-33153 |
| CWE-ID | CWE-451 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Microsoft Outlook Client/Desktop applications / Office applications Microsoft Office Client/Desktop applications / Office applications Microsoft 365 Apps for Enterprise Client/Desktop applications / Office applications Microsoft Office LTSC 2021 Other software / Other software solutions |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Spoofing attack
EUVDB-ID: #VU78199
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-33151
CWE-ID:
CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in Microsoft Outlook. A remote attacker can trick a victim to click on a specially crafted URL and spoof page content.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Outlook: 2013 - 2016
Microsoft Office: 2019
Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
External linkshttp://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33151
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.
2) Input validation error
EUVDB-ID: #VU78200
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-33153
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input in the Microsoft Outlook. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 2013 RT Service Pack 1 - 2019
Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
External linkshttp://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33153
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.
