Published: 03/05/2024 Updated: 03/05/2024

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote malicious users 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 write past the end of a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17434.

Several vulnerabilities were discovered in Exim, a mail transport agent, which could result in remote code execution if the EXTERNAL or SPA/NTLM authenticators are used For the oldstable distribution (bullseye), these problems have been fixed in version 4942-7+deb11u1 For the stable distribution (bookworm), these problems have been fixed in ver ...

DescriptionAn out-of-bounds write flaw exists in Exim 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 write past the end of a buffer An attacker can leverage this vulnerability to execute code in the context of the service acc ...

https://www.zerodayinitiative.com/advisories/ZDI-23-1469/https://nvd.nist.gov https://www.debian.org/security/2023/dsa-5512 https://access.redhat.com/security/cve/cve-2023-42115 https://www.zerodayinitiative.com/advisories/ZDI-23-1469/

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CVE-2023-42115

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