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    CVE-2015-7687

    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.

    Published:Oct 16, 2017
    Last Modified:Apr 20, 2025
    EPS:Oct 16, 2017
    EPSS Score:0.10142
    CVSS Score:9.8

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Openbsd
    Product
    Opensmtpd

    Exploits

    https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txthttps://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-35094 (CVSS 3.3) — A flaw was found in libinput. An attacker capable of deploying a Lua plugin file in specific system directorie…
    CVE-2026-35093 (CVSS 8.8) — A flaw was found in libinput. A local attacker who can place a specially crafted Lua bytecode file in certain …
    CVE-2024-3056 (CVSS 7.7) — A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, whe…
    CVE-2024-6293 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6292 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-6291 (CVSS 8.8) — Use after free in Swiftshader in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentiall…
    CVE-2024-6290 (CVSS 8.8) — Use after free in Dawn in Google Chrome prior to 126.0.6478.126 allowed a remote attacker to potentially explo…
    CVE-2024-38277 (CVSS 5.4) — A unique key should be generated for a user's QR login key and their auto-login key, so the same key cannot be…

    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://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

    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