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    CVE-2011-2940

    stunnel 4.40 and 4.41 might allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

    Published:Aug 18, 2011
    Last Modified:Apr 11, 2025
    EPS:Aug 25, 2011
    EPSS Score:0.12759
    CVSS Score:9.3

    Affected Products

    Vendor
    Stunnel
    Product
    Stunnel

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-70368 (CVSS 6.5) — A stack-based out-of-bounds read vulnerability exists in the "s_vlog" function of stunnel, when handling overs…
    CVE-2026-70367 (CVSS 5.4) — A Server-Side Request Forgery (SSRF) bypass vulnerability exists in “stunnel” 5.79 and lower when configured i…
    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-2014-0016 (CVSS 4.3) — stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-rando…
    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-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…

    References

    http://secunia.com/advisories/45705
    http://securitytracker.com/id?1025959
    http://stunnel.org/?page=sdf_ChangeLog
    http://www.openwall.com/lists/oss-security/2011/08/19/18
    http://www.openwall.com/lists/oss-security/2011/08/19/6
    http://www.osvdb.org/74600
    http://www.securityfocus.com/bid/49254
    http://www.stunnel.org/pipermail/stunnel-announce/2011-August/000059.html
    https://bugzilla.redhat.com/show_bug.cgi?id=732068
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69318
    http://secunia.com/advisories/45705
    http://securitytracker.com/id?1025959
    http://stunnel.org/?page=sdf_ChangeLog
    http://www.openwall.com/lists/oss-security/2011/08/19/18
    http://www.openwall.com/lists/oss-security/2011/08/19/6
    http://www.osvdb.org/74600
    http://www.securityfocus.com/bid/49254
    http://www.stunnel.org/pipermail/stunnel-announce/2011-August/000059.html
    https://bugzilla.redhat.com/show_bug.cgi?id=732068
    https://exchange.xforce.ibmcloud.com/vulnerabilities/69318

    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