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    CVE-2014-0015

    cURL and libcurl 7.10.6 through 7.34.0, when more than one authentication method is enabled, re-uses NTLM connections, which might allow context-dependent attackers to authenticate as other users via a request.

    Published:Jan 29, 2014
    Last Modified:Apr 11, 2025
    EPS:Feb 2, 2014
    EPSS Score:0.02575
    CVSS Score:4

    Affected Products

    Vendor
    Haxx
    Product
    Curl
    Vendor
    Haxx
    Product
    Libcurl
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

    CVE-2026-7168 (CVSS 5.3) — Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authenticati…
    CVE-2026-7009 (CVSS 5.3) — When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP stapling*, t…
    CVE-2026-6429 (CVSS 5.3) — When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, libcurl could leak the pa…
    CVE-2026-4873 (CVSS 5.9) — A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection …
    CVE-2026-6253 (CVSS 5.9) — curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the foll…
    CVE-2026-5773 (CVSS 7.5) — libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool …
    CVE-2026-5545 (CVSS 6.5) — libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) reque…
    CVE-2026-6276 (CVSS 7.5) — Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequen…
    CVE-2026-3805 (CVSS 7.5) — When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into al…
    CVE-2026-3784 (CVSS 6.5) — curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request …

    References

    http://archives.neohapsis.com/archives/bugtraq/2014-06/0172.html
    http://curl.haxx.se/docs/adv_20140129.html
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10743
    http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127627.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128408.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00066.html
    http://seclists.org/fulldisclosure/2014/Dec/23
    http://secunia.com/advisories/56728
    http://secunia.com/advisories/56731
    http://secunia.com/advisories/56734
    http://secunia.com/advisories/56912
    http://secunia.com/advisories/59458
    http://secunia.com/advisories/59475
    http://support.apple.com/kb/HT6296
    http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
    http://www.debian.org/security/2014/dsa-2849
    http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
    http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/archive/1/534161/100/0/threaded
    http://www.securityfocus.com/bid/65270
    http://www.securitytracker.com/id/1029710
    http://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.502652
    http://www.ubuntu.com/usn/USN-2097-1
    http://www.vmware.com/security/advisories/VMSA-2014-0012.html
    http://archives.neohapsis.com/archives/bugtraq/2014-06/0172.html
    http://curl.haxx.se/docs/adv_20140129.html
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10743
    http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127627.html
    http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128408.html
    http://lists.opensuse.org/opensuse-updates/2014-02/msg00066.html
    http://seclists.org/fulldisclosure/2014/Dec/23
    http://secunia.com/advisories/56728
    http://secunia.com/advisories/56731
    http://secunia.com/advisories/56734
    http://secunia.com/advisories/56912
    http://secunia.com/advisories/59458
    http://secunia.com/advisories/59475
    http://support.apple.com/kb/HT6296
    http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
    http://www.debian.org/security/2014/dsa-2849
    http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
    http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
    http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
    http://www.securityfocus.com/archive/1/534161/100/0/threaded
    http://www.securityfocus.com/bid/65270
    http://www.securitytracker.com/id/1029710
    http://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.502652
    http://www.ubuntu.com/usn/USN-2097-1
    http://www.vmware.com/security/advisories/VMSA-2014-0012.html

    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