CVE-2020-7247

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

9.8 (CRITICAL) מקור הציון: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — סבירות ניצול

99% (אחוזון 100) נכון ל-10/8/2026

CWE

CWE-78, CWE-755

מוצרים מושפעים

openbsd: opensmtpd; debian: debian linux; fedoraproject: fedora; canonical: ubuntu linux

קישורים

• https://www.openbsd.org/security.html PatchVendor Advisory
• https://www.openbsd.org/security.html PatchVendor Advisory
• https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45 Patch
• https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45 Patch
• http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escala‮… ExploitThird Party AdvisoryVDB Entry
• http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execut‮… ExploitThird Party AdvisoryVDB Entry
• http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Ex‮… ExploitThird Party AdvisoryVDB Entry
• http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Es‮… ExploitThird Party AdvisoryVDB Entry
• http://seclists.org/fulldisclosure/2020/Jan/49 ExploitMailing ListThird Party Advisory
• http://www.openwall.com/lists/oss-security/2020/01/28/3 ExploitMailing ListThird Party Advisory