Risk | High |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2023-23399 CVE-2023-23398 CVE-2023-23396 |
CWE-ID | CWE-20 CWE-451 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software |
Microsoft Office Client/Desktop applications / Office applications Microsoft Excel Client/Desktop applications / Office applications Microsoft 365 Apps for Enterprise Client/Desktop applications / Office applications Office Online Server Server applications / Other server solutions Microsoft Office Web Apps Server Server applications / Application servers Microsoft Office LTSC 2021 Other software / Other software solutions |
Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
EUVDB-ID: #VU73573
Risk: High
CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2023-23399
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 2013 Service Pack 1 - 2019
Office Online Server: All versions
Microsoft Excel: 2013 RT Service Pack 1 - 2016
Microsoft Office Web Apps Server: 2013 Service Pack 1
Microsoft Office LTSC 2021: 32 bit editions - 2021 for Mac
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23399
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. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU73582
Risk: High
CVSSv4.0: 5.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2023-23398
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 Excel. A remote attacker can spoof page content.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft Office: 2019
Microsoft Excel: 2013 RT Service Pack 1 - 2016
Microsoft Office LTSC 2021: 32 bit editions - 64 bit editions
Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems
CPE2.3http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23398
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.
EUVDB-ID: #VU73595
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2023-23396
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted XLSX file and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsOffice Online Server: All versions
Microsoft Office Web Apps Server: 2013 Service Pack 1
CPE2.3http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23396
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.