Scientific Linux Security Update : python on SL7.x x86_64

Medium Nessus Plugin ID 87570


The remote Scientific Linux host is missing one or more security updates.


It was discovered that the Python xmlrpclib module did not restrict the size of gzip-compressed HTTP responses. A malicious XMLRPC server could cause an XMLRPC client using xmlrpclib to consume an excessive amount of memory. (CVE-2013-1753)

It was discovered that multiple Python standard library modules implementing network protocols (such as httplib or smtplib) failed to restrict the sizes of server responses. A malicious server could cause a client using one of the affected modules to consume an excessive amount of memory. (CVE-2013-1752)

It was discovered that the CGIHTTPServer module incorrectly handled URL encoded paths. A remote attacker could use this flaw to execute scripts outside of the cgi-bin directory, or disclose the source code of the scripts in the cgi-bin directory. (CVE-2014-4650)

An integer overflow flaw was found in the way the buffer() function handled its offset and size arguments. An attacker able to control these arguments could use this flaw to disclose portions of the application memory or cause it to crash. (CVE-2014-7185)

A flaw was found in the way the json module handled negative index arguments passed to certain functions (such as raw_decode()). An attacker able to control the index value passed to one of the affected functions could possibly use this flaw to disclose portions of the application memory. (CVE-2014-4616)

The Python standard library HTTP client modules (such as httplib or urllib) did not perform verification of TLS/SSL certificates when connecting to HTTPS servers. A man-in-the-middle attacker could use this flaw to hijack connections and eavesdrop or modify transferred data. (CVE-2014-9365)

This update also fixes the following bugs :

- Subprocesses used with the Eventlet library or regular threads previously tried to close epoll file descriptors twice, which led to an 'Invalid argument' error.
Subprocesses have been fixed to close the file descriptors only once.

- When importing the readline module from a Python script, Python no longer produces erroneous random characters on stdout.

- The cProfile utility has been fixed to print all values that the '-s' option supports when this option is used without a correct value.

- The load_cert_chain() function now accepts 'None' as a keyfile argument.

In addition, this update adds the following enhancements :

- Security enhancements as described in PEP 466 have been backported to the Python standard library, for example, new features of the ssl module: Server Name Indication (SNI) support, support for new TLSv1.x protocols, new hash algorithms in the hashlib module, and many more.

- Support for the ssl.PROTOCOL_TLSv1_2 protocol has been added to the ssl library.

- The ssl.SSLSocket.version() method is now available to access information about the version of the SSL protocol used in a connection.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 87570

File Name: sl_20151119_python_on_SL7_x.nasl

Version: $Revision: 2.2 $

Type: local

Agent: unix

Published: 2015/12/22

Modified: 2018/01/26

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P


Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2015/11/19

Reference Information

CVE: CVE-2013-1752, CVE-2013-1753, CVE-2014-4616, CVE-2014-4650, CVE-2014-7185, CVE-2014-9365