CVE-2023-42115
Publication date 28 September 2023
Last updated 24 July 2024
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| exim4 | ||
| 22.04 LTS jammy |
Fixed 4.95-4ubuntu2.3
|
|
| 20.04 LTS focal |
Fixed 4.93-13ubuntu1.8
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
eslerm
no security patches available, see ZDI's timeline
allenpthuang
patches now available, see the thread on Openwall
References
Related Ubuntu Security Notices (USN)
- USN-6411-1
- Exim vulnerabilities
- 4 October 2023