CVE-2023-42118
Published: 3 May 2024
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.
Notes
| Author | Note |
|---|---|
| eslerm | no security patches available, see ZDI's timeline ZDI claims this is Exim's issue, Exim claims this is libspf2's |
| mdeslaur | as of 2024-04-15, still not enough details from ZDI to know what this CVE is. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
exim4 Launchpad, Ubuntu, Debian |
bionic |
Deferred
(2024-04-15)
|
| focal |
Deferred
(2024-04-15)
|
|
| jammy |
Deferred
(2024-04-15)
|
|
| lunar |
Ignored
(end of life, was deferred [2024-04-15])
|
|
| mantic |
Deferred
(2024-04-15)
|
|
| noble |
Deferred
(2024-04-15)
|
|
| trusty |
Deferred
(2024-04-15)
|
|
| upstream |
Needs triage
|
|
| xenial |
Deferred
(2024-04-15)
|
|
|
libspf2 Launchpad, Ubuntu, Debian |
bionic |
Deferred
(2024-04-15)
|
| focal |
Deferred
(2024-04-15)
|
|
| jammy |
Deferred
(2024-04-15)
|
|
| lunar |
Ignored
(end of life, was deferred [2024-04-15])
|
|
| mantic |
Deferred
(2024-04-15)
|
|
| noble |
Deferred
(2024-04-15)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Deferred
(2024-04-15)
|