CVE-2023-38181
Microsoft Exchange Server Spoofing Vulnerability
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Microsoft Exchange Server Spoofing Vulnerability
This vulnerability allows remote attackers to create a denial-of-service condition or relay NTLM credentials on affected installations of Microsoft Exchange. Authentication is required to exploit this vulnerability.
The specific flaw exists within the lack of protection against deserialization of the GsmWriter class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to create a denial-of-service condition on the system or to relay NTLM credentials.
*Credits:
Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-07-12 CVE Reserved
- 2023-08-08 CVE Published
- 2024-08-02 CVE Updated
- 2024-11-25 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-502: Deserialization of Untrusted Data
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38181 | 2024-05-29 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2016 Search vendor "Microsoft" for product "Exchange Server" and version "2016" | cumulative_update_23 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2019 Search vendor "Microsoft" for product "Exchange Server" and version "2019" | cumulative_update_12 |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Exchange Server Search vendor "Microsoft" for product "Exchange Server" | 2019 Search vendor "Microsoft" for product "Exchange Server" and version "2019" | cumulative_update_13 |
Affected
| ||||||