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Mend.io Vulnerability Database

CVE-2020-7247

Date: January 29, 2020

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.

Language: C

Severity Score

9.8

Related Resources (19)

Url: https://seclists.org/bugtraq/2020/Jan/51

Url: https://security-tracker.debian.org/tracker/CVE-2020-7247

Url: http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html

Url: https://security.alpinelinux.org/vuln/CVE-2020-7247

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-7247

Url: http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html

Url: https://www.debian.org/security/2020/dsa-4611

Url: http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html

Url: http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-7247

Url: https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45

Url: http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html

Url: http://seclists.org/fulldisclosure/2020/Jan/49

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/

Url: http://www.openwall.com/lists/oss-security/2020/01/28/3

Url: https://www.openbsd.org/security.html

Url: https://usn.ubuntu.com/4268-1/

Url: https://www.kb.cert.org/vuls/id/390745

Url: https://www.mend.io/vulnerability-database/CVE-2020-7247

Severity Score

9.8

Weakness Type (CWE)

OS Command Injections

CWE-78

Unchecked Return Value

CWE-252

Improper Handling of Exceptional Conditions

CWE-755

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	10.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2020-7247

Date: January 29, 2020

Language: C

Severity Score

Related Resources (19)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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