Products
Exim
Source
zdi-disclosures@trendmicro.com
Tags
CVE-2023-42118 details
Last Modified : May 3, 2024, 12:49 p.m.
Description
Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17578.
CVSS Score
1 | 2 | 3 | 4 | 5 | 6 | 7.5 | 8 | 9 | 10 |
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Weakness
Weakness | Name | Description |
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CVSS Data
Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Base Score
7.5
Exploitability Score
Impact Score
Base Severity
HIGH
Vector String : CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
URL | Source |
---|---|
https://www.zerodayinitiative.com/advisories/ZDI-23-1472/ | zdi-disclosures@trendmicro.com |