CVE-2020-28007

Publication date 4 May 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the log directory (owned by a non-root user), a symlink or hard link attack allows overwriting critical root-owned files anywhere on the filesystem.

Status

Package Ubuntu Release Status
exim4 22.04 LTS jammy
Fixed 4.94-15ubuntu1.2
21.10 impish
Fixed 4.94-15ubuntu1.2
21.04 hirsute
Fixed 4.94-15ubuntu1.2
20.10 groovy
Fixed 4.94-7ubuntu1.2
20.04 LTS focal
Fixed 4.93-13ubuntu1.5
18.04 LTS bionic
Fixed 4.90.1-1ubuntu1.8
16.04 LTS xenial
Fixed 4.86.2-2ubuntu2.6+esm1
14.04 LTS trusty
Fixed 4.82-3ubuntu2.4+esm3

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Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references