Scientific Linux Security Update : curl on SL6.x i386/x86_64

This script is Copyright (C) 2015 Tenable Network Security, Inc.

Synopsis :

The remote Scientific Linux host is missing one or more security

Description :

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 to 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)

Bug fixes :

- An out-of-protocol fallback to SSL version 3.0 (SSLv3.0)
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 SSLv3.0 through
the libcurl API.

- A single upload transfer through the FILE protocol
opened the destination file twice. If the inotify kernel
subsystem monitored the file, two events were produced
unnecessarily. The file is now opened only once per

- Utilities using libcurl for SCP/SFTP transfers could
terminate unexpectedly when the system was running in
FIPS mode.

- Using the '--retry' option with the curl utility could
cause curl to terminate unexpectedly with a segmentation
fault. Now, adding '--retry' no longer causes curl to

- The 'curl --trace-time' command did not use the correct
local time when printing timestamps. Now, 'curl
--trace-time' works as expected.

- The valgrind utility could report dynamically allocated
memory leaks on curl exit. Now, curl performs a global
shutdown of the NetScape Portable Runtime (NSPR) library
on exit, and valgrind no longer reports the memory

- Previously, libcurl returned an incorrect value of the
CURLINFO_HEADER_SIZE field when a proxy server appended
its own headers to the HTTP response. Now, the returned
value is valid.

Enhancements :

- The '--tlsv1.0', '--tlsv1.1', and '--tlsv1.2' options
are available for specifying the minor version of the
TLS protocol to be negotiated by NSS. The '--tlsv1'
option now negotiates the highest version of the TLS
protocol supported by both the client and the server.

- It is now possible to explicitly enable or disable the
ECC and the new AES cipher suites to be used for TLS.

See also :

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 85191 ()

Bugtraq ID:

CVE ID: CVE-2014-3613

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