CVE-2013-4545

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    CVE-2013-4545

    Published: 23 Nov 2013Last Modified: 16 Apr 2026

    Summary:

    Details: cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verification (CURLOPT_SSL_VERIFYHOST) when the digital signature verification (CURLOPT_SSL_VERIFYPEER) is disabled, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

    References: http://curl.haxx.se/docs/adv_20131115.html, http://www.debian.org/security/2013/dsa-2798, http://www.ubuntu.com/usn/USN-2048-1, http://lists.opensuse.org/opensuse-updates/2013-12/msg00047.html, http://lists.opensuse.org/opensuse-updates/2013-12/msg00053.html, http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html, http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html, http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html, https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322

    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
    CVE-2013-4545 | CVE-DB