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    CVE-2014-0016

    stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-random number generator (PRNG), which causes subsequent children with the same process ID to use the same entropy pool and allows remote attackers to obtain private keys for EC (ECDSA) or DSA certificates.

    Published:Mar 5, 2014
    Last Modified:Apr 12, 2025
    EPS:Mar 23, 2014
    EPSS Score:0.00312
    CVSS Score:4.3

    Affected Products

    Vendor
    Stunnel
    Product
    Stunnel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-332 Insufficient Entropy in PRNG

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2021-20230 (CVSS 7.5) — A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configur…
    CVE-2015-3644 (CVSS 5.8) — Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expecte…
    CVE-2013-1762 (CVSS 6.6) — stunnel 4.21 through 4.54, when CONNECT protocol negotiation and NTLM authentication are enabled, does not cor…
    CVE-2011-2940 (CVSS 9.3) — stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (hea…
    CVE-2008-2400 (CVSS 7.2) — Unspecified vulnerability in stunnel before 4.23, when running as a service on Windows, allows local users to …
    CVE-2008-2420 (CVSS 6.8) — The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), whi…
    CVE-2003-0740 (CVSS 4.6) — Stunnel 4.00, and 3.24 and earlier, leaks a privileged file descriptor returned by listen(), which allows loca…
    CVE-2003-0147 (CVSS 5) — OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server's p…

    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