CVE-2023-42115
Published: 28 September 2023
Exim AUTH Out-Of-Bounds Write 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 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.
Notes
| Author | Note |
|---|---|
| eslerm | no security patches available, see ZDI's timeline |
| allenpthuang | patches now available, see the thread on Openwall |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
exim4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Released
(4.93-13ubuntu1.8)
|
|
| jammy |
Released
(4.95-4ubuntu2.3)
|
|
| lunar |
Released
(4.96-14ubuntu1.2)
|
|
| mantic |
Released
(4.96-17ubuntu2)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(4.96.1)
|
|
| xenial |
Not vulnerable
(code not present)
|