It was found that libcurl could incorrectly reuse existing connections for requests that should have used different or no authentication credentials, when using one of the following protocols: HTTP(S) with NTLM authentication, LDAP(S), SCP, or SFTP. If an application using the libcurl library connected to a remote server with certain authentication credentials, this flaw could cause other requests to use those same credentials. (CVE-2014-0015, CVE-2014-0138)

This update also fixes the following bugs :

  - Previously, the libcurl library was closing a network     socket without first terminating the SSL connection     using the socket. This resulted in a write after close     and consequent leakage of memory dynamically allocated     by the SSL library. An upstream patch has been applied     on libcurl to fix this bug. As a result, the write after     close no longer happens, and the SSL library no longer     leaks memory.

  - Previously, the libcurl library did not implement a     non-blocking SSL handshake, which negatively affected     performance of applications based on libcurl's multi     API. To fix this bug, the non-blocking SSL handshake has     been implemented by libcurl. With this update, libcurl's     multi API immediately returns the control back to the     application whenever it cannot read/write data from/to     the underlying network socket.

  - Previously, the curl package could not be rebuilt from     sources due to an expired cookie in the upstream     test-suite, which runs during the build. An upstream     patch has been applied to postpone the expiration date     of the cookie, which makes it possible to rebuild the     package from sources again.

  - Previously, the libcurl library attempted to     authenticate using Kerberos whenever such an     authentication method was offered by the server. This     caused problems when the server offered multiple     authentication methods and Kerberos was not the selected     one. An upstream patch has been applied on libcurl to     fix this bug. Now libcurl no longer uses Kerberos     authentication if another authentication method is     selected.

All running applications that use libcurl have to be restarted for this update to take effect.

Updated curl packages fix security vulnerabilities :

Paras Sethia discovered that libcurl would sometimes mix up multiple HTTP and HTTPS connections with NTLM authentication to the same server, sending requests for one user over the connection authenticated as a different user (CVE-2014-0015).

libcurl can in some circumstances re-use the wrong connection when asked to do transfers using other protocols than HTTP and FTP, causing a transfer that was initiated by an application to wrongfully re-use an existing connection to the same server that was authenticated using different credentials (CVE-2014-0138).

libcurl incorrectly validates wildcard SSL certificates containing literal IP addresses, so under certain conditions, it would allow and use a wildcard match specified in the CN field, allowing a malicious server to participate in a MITM attack or just fool users into believing that it is a legitimate site (CVE-2014-0139).

cURL and libcurl 7.10.6 through 7.41.0 does not properly re-use NTLM connections, which allows remote attackers to connect as other users via an unauthenticated request, a similar issue to CVE-2014-0015.
(CVE-2015-3143)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2014-0015)

Note that Nessus relies on the presence of the package as reported by the vendor.

Updated curl packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

cURL provides the libcurl library and a command line tool for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

It was found that libcurl could incorrectly reuse existing connections for requests that should have used different or no authentication credentials, when using one of the following protocols: HTTP(S) with NTLM authentication, LDAP(S), SCP, or SFTP. If an application using the libcurl library connected to a remote server with certain authentication credentials, this flaw could cause other requests to use those same credentials. (CVE-2014-0015, CVE-2014-0138)

Red Hat would like to thank the cURL project for reporting these issues. Upstream acknowledges Paras Sethia as the original reporter of CVE-2014-0015 and Yehezkel Horowitz for discovering the security impact of this issue, and Steve Holme as the original reporter of CVE-2014-0138.

This update also fixes the following bugs :

* Previously, the libcurl library was closing a network socket without first terminating the SSL connection using the socket. This resulted in a write after close and consequent leakage of memory dynamically allocated by the SSL library. An upstream patch has been applied on libcurl to fix this bug. As a result, the write after close no longer happens, and the SSL library no longer leaks memory. (BZ#1092479)

* Previously, the libcurl library did not implement a non-blocking SSL handshake, which negatively affected performance of applications based on libcurl's multi API. To fix this bug, the non-blocking SSL handshake has been implemented by libcurl. With this update, libcurl's multi API immediately returns the control back to the application whenever it cannot read/write data from/to the underlying network socket. (BZ#1092480)

* Previously, the curl package could not be rebuilt from sources due to an expired cookie in the upstream test-suite, which runs during the build. An upstream patch has been applied to postpone the expiration date of the cookie, which makes it possible to rebuild the package from sources again. (BZ#1092486)

* Previously, the libcurl library attempted to authenticate using Kerberos whenever such an authentication method was offered by the server. This caused problems when the server offered multiple authentication methods and Kerberos was not the selected one. An upstream patch has been applied on libcurl to fix this bug. Now libcurl no longer uses Kerberos authentication if another authentication method is selected. (BZ#1096797)

All curl users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. All running applications that use libcurl have to be restarted for this update to take effect.

a. VMware vCSA cross-site scripting vulnerability

   VMware vCenter Server Appliance (vCSA) contains a vulnerability    that may allow for Cross Site Scripting. Exploitation of this    vulnerability in vCenter Server requires tricking a user to click    on a malicious link or to open a malicious web page. 

   VMware would like to thank Tanya Secker of Trustwave SpiderLabs for    reporting this issue to us. 

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the name CVE-2014-3797 to this issue. 

b. vCenter Server certificate validation issue

   vCenter Server does not properly validate the presented certificate    when establishing a connection to a CIM Server residing on an ESXi    host. This may allow for a Man-in-the-middle attack against the CIM    service.

   VMware would like to thank The Google Security Team for reporting    this issue to us.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the identifier CVE-2014-8371 to this issue. 

  c. Update to ESXi libxml2 package

  libxml2 is updated to address multiple security issues. 

  The Common Vulnerabilities and Exposures project   (cve.mitre.org) has assigned the names CVE-2013-2877 and   CVE-2014-0191 to these issues. 

  d. Update to ESXi Curl package

  Curl is updated to address multiple security issues. 

  The Common Vulnerabilities and Exposures project   (cve.mitre.org) has assigned the names CVE-2014-0015 and   CVE-2014-0138 to these issues. 

  e. Update to ESXi Python package

  Python is updated to address multiple security issues. 

  The Common Vulnerabilities and Exposures project   (cve.mitre.org) has assigned the names CVE-2013-1752 and   CVE-2013-4238 to these issues. 

  f. vCenter and Update Manager, Oracle JRE 1.6 Update 81

  Oracle has documented the CVE identifiers that are addressed in   JRE 1.6.0 update 81 in the Oracle Java SE Critical Patch Update   Advisory of July 2014. The References section provides a link to   this advisory.

The remote OracleVM system is missing necessary patches to address critical security updates :

  - require credentials to match for NTLM re-use     (CVE-2015-3143)

  - close Negotiate connections when done (CVE-2015-3148)

  - reject CRLFs in URLs passed to proxy (CVE-2014-8150)

  - use only full matches for hosts used as IP address in     cookies (CVE-2014-3613)

  - fix handling of CURLOPT_COPYPOSTFIELDS in     curl_easy_duphandle (CVE-2014-3707)

  - fix manpage typos found using aspell (#1011101)

  - fix comments about loading CA certs with NSS in man     pages (#1011083)

  - fix handling of DNS cache timeout while a transfer is in     progress (#835898)

  - eliminate unnecessary inotify events on upload via file     protocol (#883002)

  - use correct socket type in the examples (#997185)

  - do not crash if MD5 fingerprint is not provided by     libssh2 (#1008178)

  - fix SIGSEGV of curl --retry when network is down     (#1009455)

  - allow to use TLS 1.1 and TLS 1.2 (#1012136)

  - docs: update the links to cipher-suites supported by NSS     (#1104160)

  - allow to use ECC ciphers if NSS implements them     (#1058767)

  - make curl --trace-time print correct time (#1120196)

  - let tool call PR_Cleanup on exit if NSPR is used     (#1146528)

  - ignore CURLOPT_FORBID_REUSE during NTLM HTTP auth     (#1154747)

  - allow to enable/disable new AES cipher-suites (#1156422)

  - include response headers added by proxy in     CURLINFO_HEADER_SIZE (#1161163)

  - disable libcurl-level downgrade to SSLv3 (#1154059)

  - do not force connection close after failed HEAD request     (#1168137)

  - fix occasional SIGSEGV during SSL handshake (#1168668)

  - fix a connection failure when FTPS handle is reused     (#1154663)

  - fix re-use of wrong HTTP NTLM connection (CVE-2014-0015)

  - fix connection re-use when using different log-in     credentials (CVE-2014-0138)

  - fix authentication failure when server offers multiple     auth options (#799557)

  - refresh expired cookie in test172 from upstream     test-suite (#1069271)

  - fix a memory leak caused by write after close (#1078562)

  - nss: implement non-blocking SSL handshake (#1083742)

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
74208	Scientific Linux Security Update : curl on SL6.x i386/x86_64 (20140527)	Nessus	Scientific Linux Local Security Checks	2014/5/28	2021/1/14	medium
74418	Mandriva Linux Security Advisory : curl (MDVSA-2014:110)	Nessus	Mandriva Local Security Checks	2014/6/10	2021/1/6	medium
99203	F5 Networks BIG-IP : cURL and libcurl vulnerability (K16704)	Nessus	F5 Networks Local Security Checks	2017/4/6	2025/12/26	medium
218292	Linux Distros Unpatched Vulnerability : CVE-2014-0015	Nessus	Misc.	2025/3/4	2026/7/24	critical
74205	RHEL 6 : curl (RHSA-2014:0561)	Nessus	Red Hat Local Security Checks	2014/5/28	2021/1/14	medium
79762	VMSA-2014-0012 : VMware vSphere product updates address security vulnerabilities	Nessus	VMware ESX Local Security Checks	2014/12/6	2021/1/6	medium
85148	OracleVM 3.3 : curl (OVMSA-2015-0107)	Nessus	OracleVM Local Security Checks	2015/7/31	2021/1/4	medium

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