CVE-2020-7247

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
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.
Overview
  • CVE ID
  • CVE-2020-7247
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-01-29T16:15:12
  • Last Modified Date
  • 2022-04-29T13:24:05
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:openbsd:opensmtpd:6.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45 Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/28/3 Exploit Mailing List Third Party Advisory
https://www.openbsd.org/security.html Patch Vendor Advisory
http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html Exploit Third Party Advisory VDB Entry
https://seclists.org/bugtraq/2020/Jan/51 Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4611 Third Party Advisory
http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html Third Party Advisory VDB Entry
https://www.kb.cert.org/vuls/id/390745 Third Party Advisory US Government Resource
http://seclists.org/fulldisclosure/2020/Jan/49 Mailing List Third Party Advisory
http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html Exploit Third Party Advisory VDB Entry
https://usn.ubuntu.com/4268-1/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/ Mailing List Third Party Advisory
http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html Broken Link
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-7247
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7247
History
Created Old Value New Value Data Type Notes
2022-05-08 06:20:34 Added to TrackCVE
2022-12-04 10:24:11 2020-01-29T16:15Z 2020-01-29T16:15:12 CVE Published Date updated
2022-12-04 10:24:12 2022-04-29T13:24:05 CVE Modified Date updated
2022-12-04 10:24:12 Analyzed Vulnerability Status updated