CVE-2020-28019
Published: 4 May 2021
Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.
Notes
| Author | Note |
|---|---|
| leosilva | trusty/xenial ESM not affected. vulnerability was introduced by: https://git.exim.org/exim.git/patch/7e3ce68e68ab9b8906a637d352993abf361554e2 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
exim4 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.90.1-1ubuntu1.8)
|
| focal |
Released
(4.93-13ubuntu1.5)
|
|
| groovy |
Released
(4.94-7ubuntu1.2)
|
|
| hirsute |
Released
(4.94-15ubuntu1.2)
|
|
| jammy |
Released
(4.94-15ubuntu1.2)
|
|
| upstream |
Needs triage
|
|
| impish |
Released
(4.94-15ubuntu1.2)
|
|
| trusty |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
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 | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |