CVE-2020-28018
Publication date 4 May 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
Status
Package | Ubuntu Release | Status |
---|---|---|
exim4 | 22.04 LTS jammy |
Fixed 4.94-15ubuntu1.2
|
20.04 LTS focal |
Fixed 4.93-13ubuntu1.5
|
|
18.04 LTS bionic |
Fixed 4.90.1-1ubuntu1.8
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty |
Not affected
|
Notes
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 · Critical |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4934-1
- Exim vulnerabilities
- 4 May 2021