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 |