CVE-2021-27216

CVSS V2 Medium 6.3 CVSS V3 Medium 6.3

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.

Overview

CVE ID
CVE-2021-27216

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-05-06T13:15:12

Last Modified Date
2022-06-28T14:11:45

Weakness Enumerations

CWE	URL
CWE-362	http://cwe.mitre.org/data/definitions/362.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:exim:exim::::::::	1	OR		4.94.2

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.3

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
9.2

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
6.3

Base Severity
MEDIUM

Exploitability Score
1

Impact Score
5.2

References

Reference URL	Reference Tags
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt	Exploit Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-27216
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27216

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:16:10				Added to TrackCVE
2022-12-05 01:38:28	2021-05-06T13:15Z	2021-05-06T13:15:12	CVE Published Date	updated
2022-12-05 01:38:28		2022-06-28T14:11:45	CVE Modified Date	updated
2022-12-05 01:38:28		Analyzed	Vulnerability Status	updated