Exim NTLM Challenge out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Exim. It has been rated as problematic. This vulnerability affects unknown code of the component NTLM Challenge. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2023-42114. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Exim (Mail Server Software) (version unknown). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component NTLM Challenge. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of NTLM challenge requests. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this vulnerability to disclose information in the context of the service account. . Was ZDI-CAN-17433.

The weakness was presented 09/28/2023 as ZDI-23-1468. The advisory is shared at zerodayinitiative.com. This vulnerability is known as CVE-2023-42114 since 09/06/2023. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 3.7
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/06/2023 🔍
09/28/2023 +22 days 🔍
09/28/2023 +0 days 🔍
08/07/2025 +679 days 🔍

Sourcesinfo

Advisory: ZDI-23-1468
Status: Not defined

CVE: CVE-2023-42114 (🔍)
GCVE (CVE): GCVE-0-2023-42114
GCVE (VulDB): GCVE-100-240793

Entryinfo

Created: 09/28/2023 07:51
Updated: 08/07/2025 23:35
Changes: 09/28/2023 07:51 (37), 09/19/2024 11:45 (26), 08/07/2025 23:35 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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