CVE-2023-42119 — Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability

Affected: Exim

Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information 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 read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. . Was ZDI-CAN-17643.

USN-6455-1 — exim4 vulnerabilities

Affected: Ubuntu:Pro:14.04:LTS: exim4, Ubuntu:Pro:16.04:LTS: exim4, Ubuntu:Pro:18.04:LTS: exim4, Ubuntu:20.04:LTS: exim4, Ubuntu:22.04:LTS: exim4

It was discovered that Exim incorrectly handled validation of user-supplied data, which could lead to memory corruption. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2023-42117)

It was discovered that Exim incorrectly handled validation of user-supplied data, which could lead to an out-of-bounds read. An attacker could possibly use this issue to expose sensitive information. (CVE-2023-42119)

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CVE-2023-42119 — Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability

USN-6455-1 — exim4 vulnerabilities