Vulnerability Monitor

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CVE-2020-8793

OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 3 products from opensmtpd, from fedoraproject, from canonical organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-02-25T17:15:13.103

Last Modified

2024-11-21T05:39:26.980

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

6.9

Weaknesses

Type: Primary
CWE-367
CWE-426

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	opensmtpd	opensmtpd	< 6.6.4	Yes
Operating System	fedoraproject	fedora	32	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	19.10	Yes

References

http://seclists.org/fulldisclosure/2020/Feb/28 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2020/02/24/4 Exploit, Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/ ([email protected])
https://usn.ubuntu.com/4294-1/ Third Party Advisory ([email protected])
https://www.openbsd.org/security.html Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2020/Feb/28 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2020/02/24/4 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/ (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4294-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openbsd.org/security.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For opensmtpd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.