CVE-2021-27216

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.

References

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt

Details

Source: MITRE

Published: 2021-05-06

Updated: 2021-05-13

Type: CWE-269

Risk Information

CVSS v2

Base Score: 6.3

Vector: AV:L/AC:M/Au:N/C:N/I:C/A:C

Impact Score: 9.2

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 6.3

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Impact Score: 5.2

Exploitability Score: 1

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
149323Ubuntu 16.04 LTS : Exim vulnerabilities (USN-4934-2)NessusUbuntu Local Security Checks
critical
149277GLSA-202105-01 : Exim: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
149260Exim < 4.94.2 Multiple Vulnerabilities (21Nails)NessusSMTP problems
critical
149253Ubuntu 18.04 LTS / 20.04 LTS / 20.10 / 21.04 : Exim vulnerabilities (USN-4934-1)NessusUbuntu Local Security Checks
critical