CVE-2013-4238

python: hostname check bypassing vulnerability in SSL module

Severity Score

9.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The ssl.match_hostname function in the SSL module in Python 2.6 through 3.4 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

La función ssl.match_hostname en el módulo SSL en Python v2.6 hasta v3.4 no manejar adecuadamente un carácter “\0” en un nombre de dominio en el campo Subject Alternative Name de un certificado X.509, lo que permite a atacantes "man-in-the-middle" suplantar servidores SSL de su elección mediante un certificado manipulado expedido por una Autoridad Certificadora legítima, un problema relacionado con CVE-2009-2408

The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine hypervisor. It includes everything necessary to run and manage virtual machines: a subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. Upgrade Note: If you upgrade the Red Hat Enterprise Virtualization Hypervisor through the 3.2 Manager administration portal, the Host may appear with the status of "Install Failed". If this happens, place the host into maintenance mode, then activate it again to get the host back to an "Up" state.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2013-06-12 CVE Reserved
2013-08-18 CVE Published
2024-08-06 CVE Updated
2025-04-02 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (16)

URL	Tag	Source
http://seclists.org/fulldisclosure/2014/Dec/23	Mailing List
http://www.securityfocus.com/archive/1/534161/100/0/threaded	Mailing List
http://www.vmware.com/security/advisories/VMSA-2014-0012.html	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://bugs.python.org/issue18709	2019-10-25
https://bugzilla.redhat.com/show_bug.cgi?id=996381	2013-11-20

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00026.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00027.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00028.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00029.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00042.html	2019-10-25
http://lists.opensuse.org/opensuse-updates/2013-09/msg00043.html	2019-10-25
http://rhn.redhat.com/errata/RHSA-2013-1582.html	2019-10-25
http://www.debian.org/security/2014/dsa-2880	2019-10-25
http://www.ubuntu.com/usn/USN-1982-1	2019-10-25
https://access.redhat.com/security/cve/CVE-2013-4238	2013-11-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				10.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "10.04"		lts		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.1 Search vendor "Python" for product "Python" and version "2.6.1"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.2 Search vendor "Python" for product "Python" and version "2.6.2"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.3 Search vendor "Python" for product "Python" and version "2.6.3"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.4 Search vendor "Python" for product "Python" and version "2.6.4"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.5 Search vendor "Python" for product "Python" and version "2.6.5"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.6 Search vendor "Python" for product "Python" and version "2.6.6"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.7 Search vendor "Python" for product "Python" and version "2.6.7"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.8 Search vendor "Python" for product "Python" and version "2.6.8"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.2150 Search vendor "Python" for product "Python" and version "2.6.2150"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.6.6150 Search vendor "Python" for product "Python" and version "2.6.6150"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.1 Search vendor "Python" for product "Python" and version "2.7.1"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.1 Search vendor "Python" for product "Python" and version "2.7.1"		rc1		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.2 Search vendor "Python" for product "Python" and version "2.7.2"		rc1		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.3 Search vendor "Python" for product "Python" and version "2.7.3"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.1150 Search vendor "Python" for product "Python" and version "2.7.1150"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.1150 Search vendor "Python" for product "Python" and version "2.7.1150"		x64		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				2.7.2150 Search vendor "Python" for product "Python" and version "2.7.2150"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.0 Search vendor "Python" for product "Python" and version "3.0"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.0.1 Search vendor "Python" for product "Python" and version "3.0.1"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1 Search vendor "Python" for product "Python" and version "3.1"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.1 Search vendor "Python" for product "Python" and version "3.1.1"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.2 Search vendor "Python" for product "Python" and version "3.1.2"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.3 Search vendor "Python" for product "Python" and version "3.1.3"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.4 Search vendor "Python" for product "Python" and version "3.1.4"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.5 Search vendor "Python" for product "Python" and version "3.1.5"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.1.2150 Search vendor "Python" for product "Python" and version "3.1.2150"		x64		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.2 Search vendor "Python" for product "Python" and version "3.2"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.2 Search vendor "Python" for product "Python" and version "3.2"		alpha		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.2.3 Search vendor "Python" for product "Python" and version "3.2.3"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.2.2150 Search vendor "Python" for product "Python" and version "3.2.2150"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.3 Search vendor "Python" for product "Python" and version "3.3"		-		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.3 Search vendor "Python" for product "Python" and version "3.3"		beta2		Affected
Python Search vendor "Python"		Python Search vendor "Python" for product "Python"				3.4 Search vendor "Python" for product "Python" and version "3.4"		alpha1		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				11.4 Search vendor "Opensuse" for product "Opensuse" and version "11.4"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.2 Search vendor "Opensuse" for product "Opensuse" and version "12.2"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.3 Search vendor "Opensuse" for product "Opensuse" and version "12.3"		-		Affected