CVE-2023-42118

HIGH

8.8

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.

Details CVE

Score CVSS v3.18.8

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueADJACENT_NETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie5/3/2024

Derniere modification8/7/2025

Sourcenvd

Observations honeypot0

Produits affectes

exim:eximlibspf2_project:libspf2

Faiblesses (CWE)

CWE-191

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1472/(zdi-disclosures@trendmicro.com)

http://www.openwall.com/lists/oss-security/2025/03/28/1(af854a3a-2127-422b-91ae-364da2661108)

https://www.zerodayinitiative.com/advisories/ZDI-23-1472/(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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