CVE-2015-7687 Information

Description

Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html http://www.openwall.com/lists/oss-security/2015/10/03/1 http://www.securityfocus.com/bid/76975 https://bugzilla.redhat.com/show_bug.cgi?id=1268793 https://www.opensmtpd.org/announces/release-5.7.2.txt https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8