AttackerKBAKB:3AD038D6-FD62-410A-8040-5D713FFAD474CVE-2020-7247
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.975 High
EPSS
Percentile
100.0%
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.
Recent assessments:
wvu-r7 at February 25, 2020 11:23pm UTC reported:
Exploit: <https://github.com/rapid7/metasploit-framework/pull/12889>.
busterb at February 26, 2020 1:05am UTC reported:
Exploit: <https://github.com/rapid7/metasploit-framework/pull/12889>.
Assessed Attacker Value: 5
Assessed Attacker Value: 5Assessed Attacker Value: 5
References
packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html
packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html
packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html
packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html
packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html
seclists.org/fulldisclosure/2020/Jan/49
www.openwall.com/lists/oss-security/2020/01/28/3
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7247
github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45
lists.fedoraproject.org/archives/list/[email protected]/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E
lists.fedoraproject.org/archives/list/[email protected]/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/
seclists.org/bugtraq/2020/Jan/51
usn.ubuntu.com/4268-1
usn.ubuntu.com/4268-1/
www.debian.org/security/2020/dsa-4611
www.kb.cert.org/vuls/id/390745
www.openbsd.org/security.html
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.975 High
EPSS
Percentile
100.0%