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CVE-2023-42116

May 3, 2024, 12:49 p.m.

Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.

Products

Exim

Source

zdi-disclosures@trendmicro.com

Tags

zdi-disclosures@trendmicro.com
CWE-121
2024-05-03
CVE-2023-42116

CVE-2023-42116 details

Published : May 3, 2024, 3:15 a.m.
Last Modified : May 3, 2024, 12:49 p.m.

Description

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17515.

CVSS Score

1 2 3 4 5 6 7 8.1 9 10

Weakness

Weakness Name Description

CVSS Data

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

8.1

Exploitability Score

Impact Score

Base Severity

HIGH

Vector String : CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL Source
https://www.zerodayinitiative.com/advisories/ZDI-23-1470/ zdi-disclosures@trendmicro.com
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