[RHSA-2015:2159-06] Moderate: curl security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: curl security, bug fix, and enhancement update

Advisory ID: RHSA-2015:2159-06

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-2159.html

Issue date: 2015-11-19

CVE Names: CVE-2014-3613 CVE-2014-3707 CVE-2014-8150

CVE-2015-3143 CVE-2015-3148

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1. Summary:

 

Updated curl packages that fix multiple security issues, several bugs, and

add two enhancements are now available for Red Hat Enterprise Linux 7.

 

Red Hat Product Security 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.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

 

3. Description:

 

The curl packages provide the libcurl library and the curl utility for

downloading files from servers using various protocols, including HTTP,

FTP, and LDAP.

 

It was found that the libcurl library did not correctly handle partial

literal IP addresses when parsing received HTTP cookies. An attacker able

to trick a user into connecting to a malicious server could use this flaw

to set the user's cookie to a crafted domain, making other cookie-related

issues easier to exploit. (CVE-2014-3613)

 

A flaw was found in the way the libcurl library performed the duplication

of connection handles. If an application set the CURLOPT_COPYPOSTFIELDS

option for a handle, using the handle's duplicate could cause the

application to crash or disclose a portion of its memory. (CVE-2014-3707)

 

It was discovered that the libcurl library failed to properly handle URLs

with embedded end-of-line characters. An attacker able to make an

application using libcurl access a specially crafted URL via an HTTP proxy

could use this flaw to inject additional headers to the request or

construct additional requests. (CVE-2014-8150)

 

It was discovered that libcurl implemented aspects of the NTLM and

Negotatiate authentication incorrectly. If an application uses libcurl

and the affected mechanisms in a specifc way, certain requests to a

previously NTLM-authenticated server could appears as sent by the wrong

authenticated user. Additionally, the initial set of credentials for HTTP

Negotiate-authenticated requests could be reused in subsequent requests,

although a different set of credentials was specified. (CVE-2015-3143,

CVE-2015-3148)

 

Red Hat would like to thank the cURL project for reporting these issues.

 

Bug fixes:

 

* An out-of-protocol fallback to SSL 3.0 was available with libcurl.

Attackers could abuse the fallback to force downgrade of the SSL version.

The fallback has been removed from libcurl. Users requiring this

functionality can explicitly enable SSL 3.0 through the libcurl API.

(BZ#1154060)

 

* TLS 1.1 and TLS 1.2 are no longer disabled by default in libcurl. You can

explicitly disable them through the libcurl API. (BZ#1170339)

 

* FTP operations such as downloading files took a significantly long time

to complete. Now, the FTP implementation in libcurl correctly sets blocking

direction and estimated timeout for connections, resulting in faster FTP

transfers. (BZ#1218272)

 

Enhancements:

 

* With the updated packages, it is possible to explicitly enable or disable

new Advanced Encryption Standard (AES) cipher suites to be used for the TLS

protocol. (BZ#1066065)

 

* The libcurl library did not implement a non-blocking SSL handshake, which

negatively affected performance of applications based on the libcurl multi

API. The non-blocking SSL handshake has been implemented in libcurl, and

the libcurl multi API now immediately returns the control back to the

application whenever it cannot read or write data from or to the underlying

network socket. (BZ#1091429)

 

* The libcurl library used an unnecessarily long blocking delay for actions

with no active file descriptors, even for short operations. Some actions,

such as resolving a host name using /etc/hosts, took a long time to

complete. The blocking code in libcurl has been modified so that the

initial delay is short and gradually increases until an event occurs.

(BZ#1130239)

 

All curl users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues and add these

enhancements.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

For details on how to apply this update, refer to:

 

https://access.redhat.com/articles/11258

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1130239 - Difference in curl performance between RHEL6 and RHEL7

1136154 - CVE-2014-3613 curl: incorrect handling of IP addresses in cookie domain

1154060 - curl: Disable out-of-protocol fallback to SSL 3.0

1154941 - CVE-2014-3707 curl: incorrect handle duplication after COPYPOSTFIELDS

1161182 - Response headers added by proxy servers missing in CURLINFO_HEADER_SIZE

1166264 - NTLM: ignore CURLOPT_FORBID_REUSE during NTLM HTTP auth [RHEL-7]

1170339 - use the default min/max TLS version provided by NSS

1178692 - CVE-2014-8150 curl: URL request injection vulnerability in parseurlandfillconn()

1213306 - CVE-2015-3143 curl: re-using authenticated connection when unauthenticated

1213351 - CVE-2015-3148 curl: Negotiate not treated as connection-oriented

1218272 - Performance problem with libcurl and FTP on RHEL7.X

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

curl-7.29.0-25.el7.src.rpm

 

x86_64:

curl-7.29.0-25.el7.x86_64.rpm

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-7.29.0-25.el7.i686.rpm

libcurl-7.29.0-25.el7.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

x86_64:

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-devel-7.29.0-25.el7.i686.rpm

libcurl-devel-7.29.0-25.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

curl-7.29.0-25.el7.src.rpm

 

x86_64:

curl-7.29.0-25.el7.x86_64.rpm

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-7.29.0-25.el7.i686.rpm

libcurl-7.29.0-25.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

x86_64:

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-devel-7.29.0-25.el7.i686.rpm

libcurl-devel-7.29.0-25.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

curl-7.29.0-25.el7.src.rpm

 

aarch64:

curl-7.29.0-25.el7.aarch64.rpm

curl-debuginfo-7.29.0-25.el7.aarch64.rpm

libcurl-7.29.0-25.el7.aarch64.rpm

libcurl-devel-7.29.0-25.el7.aarch64.rpm

 

ppc64:

curl-7.29.0-25.el7.ppc64.rpm

curl-debuginfo-7.29.0-25.el7.ppc.rpm

curl-debuginfo-7.29.0-25.el7.ppc64.rpm

libcurl-7.29.0-25.el7.ppc.rpm

libcurl-7.29.0-25.el7.ppc64.rpm

libcurl-devel-7.29.0-25.el7.ppc.rpm

libcurl-devel-7.29.0-25.el7.ppc64.rpm

 

ppc64le:

curl-7.29.0-25.el7.ppc64le.rpm

curl-debuginfo-7.29.0-25.el7.ppc64le.rpm

libcurl-7.29.0-25.el7.ppc64le.rpm

libcurl-devel-7.29.0-25.el7.ppc64le.rpm

 

s390x:

curl-7.29.0-25.el7.s390x.rpm

curl-debuginfo-7.29.0-25.el7.s390.rpm

curl-debuginfo-7.29.0-25.el7.s390x.rpm

libcurl-7.29.0-25.el7.s390.rpm

libcurl-7.29.0-25.el7.s390x.rpm

libcurl-devel-7.29.0-25.el7.s390.rpm

libcurl-devel-7.29.0-25.el7.s390x.rpm

 

x86_64:

curl-7.29.0-25.el7.x86_64.rpm

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-7.29.0-25.el7.i686.rpm

libcurl-7.29.0-25.el7.x86_64.rpm

libcurl-devel-7.29.0-25.el7.i686.rpm

libcurl-devel-7.29.0-25.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

curl-7.29.0-25.el7.src.rpm

 

x86_64:

curl-7.29.0-25.el7.x86_64.rpm

curl-debuginfo-7.29.0-25.el7.i686.rpm

curl-debuginfo-7.29.0-25.el7.x86_64.rpm

libcurl-7.29.0-25.el7.i686.rpm

libcurl-7.29.0-25.el7.x86_64.rpm

libcurl-devel-7.29.0-25.el7.i686.rpm

libcurl-devel-7.29.0-25.el7.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-3613

https://access.redhat.com/security/cve/CVE-2014-3707

https://access.redhat.com/security/cve/CVE-2014-8150

https://access.redhat.com/security/cve/CVE-2015-3143

https://access.redhat.com/security/cve/CVE-2015-3148

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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