CVE-2020-7247

Katalog CVE

CVSS 9.8 · Critical KEV · sudah dieksploitasi EPSS 99,0%

Kerentanan Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') pada openbsd opensmtpd, debian linux +2 lainnya. Skor CVSS 3.1 9.8 (Critical) menurut NVD. Masuk katalog KEV CISA pada 25 Maret 2022, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

29 Januari 2020

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-755: Improper Handling of Exceptional Conditions

EPSS (30 hari)

99,0% peluang dieksploitasi; lebih tinggi dari 99,9% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

OpenSMTPD Remote Code Execution Vulnerability

Masuk KEV

25 Maret 2022

Tenggat CISA

15 April 2022 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.openbsd.org/security.html patch · advisory vendor
• https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45 patch
• https://www.kb.cert.org/vuls/id/390745 advisory pihak ketiga · pemerintah AS
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7247 pemerintah AS
• http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html exploit · advisory pihak ketiga · vdb entry
• http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html broken link · advisory pihak ketiga · vdb entry
• http://seclists.org/fulldisclosure/2020/Jan/49 exploit · mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2020/01/28/3 exploit · mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7... mailing list · advisory pihak ketiga
• https://seclists.org/bugtraq/2020/Jan/51 mailing list · advisory pihak ketiga
• https://usn.ubuntu.com/4268-1/ advisory pihak ketiga
• https://www.debian.org/security/2020/dsa-4611 mailing list · advisory pihak ketiga