CVE-2021-38371
Published: 10 August 2021
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
Notes
| Author | Note |
|---|---|
| mdeslaur | the upstream Exim developers do not consider this to be a security issue, and do not believe this to be exploitable. See exim4 advisory. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
exim4 Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| focal |
Needed
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(4.95-4ubuntu2.2)
|
|
| kinetic |
Not vulnerable
(4.96-3ubuntu1.1)
|
|
| lunar |
Not vulnerable
(4.96-14ubuntu1)
|
|
| mantic |
Not vulnerable
(4.96-14ubuntu1)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(4.95)
|
|
| xenial |
Needed
|
|
|
Patches: upstream: https://git.exim.org/exim.git/commit/1b9ab35f323121aabf029f0496c7227818efad14 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |