CVE-2015-7687

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    CVE-2015-7687

    Published: 16 Oct 2017Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: 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, http://www.openwall.com/lists/oss-security/2015/10/03/1, https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt, https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt, https://bugzilla.redhat.com/show_bug.cgi?id=1268793

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High