CVE-2022-37451
Published: 6 August 2022
Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.
Notes
| Author | Note |
|---|---|
| mdeslaur | This is caused by store_internal_malloc being modified to store extra bytes in the following commit: https://github.com/Exim/exim/commit/1e30b0199daf7a7a882458251a3dc10d45d4c7d1 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
exim4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Not vulnerable
(code not present)
|
|
| jammy |
Not vulnerable
(4.95-4ubuntu2.1)
|
|
| kinetic |
Not vulnerable
(4.96-3ubuntu1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(4.95-4)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 |
||
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 |