Vulnerability Details : CVE-2023-42117
Exim Improper Neutralization of Special Elements 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 smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-17554.
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2023-42117
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Exploit prediction scoring system (EPSS) score for CVE-2023-42117
8.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-42117
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.1
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
Zero Day Initiative | 2024-05-03 |
CWE ids for CVE-2023-42117
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The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as control elements or syntactic markers when they are sent to a downstream component.Assigned by: zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2023-42117
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https://www.zerodayinitiative.com/advisories/ZDI-23-1471/
ZDI-23-1471 | Zero Day Initiative
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