CVE-2016-3739

    Dashboard / Vulnerabilities / CVE-2016-3739

    CVE-2016-3739

    Published: 20 May 2016Last Modified: 8 Jul 2026

    Summary:

    Details: The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.

    References: http://www.openwall.com/lists/oss-security/2024/03/27/4, http://www.securityfocus.com/bid/90726, http://www.securitytracker.com/id/1035907, http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349, https://curl.haxx.se/changes.html#7_49_0, https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149, https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722, http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html, https://curl.haxx.se/CVE-2016-3739.patch, https://curl.haxx.se/docs/adv_20160518.html, https://security.gentoo.org/glsa/201701-47

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e91d167ff8cb89523447680e3560f60d93615055
    Fixed -None

    Affected versions

    7.21.0
    7.21.1
    7.21.2
    7.21.3
    7.21.4
    7.21.5
    7.21.6
    7.21.7

    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