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Vulnerability of Python: buffer overflows of audioop

Synthesis of the vulnerability 

An attacker can generate several buffer overflows in the audioop module of Python, in order to create a denial of service or to execute code.
Vulnerable products: Fedora, Mandriva Linux, openSUSE, Python, RHEL, SLES, ESX, ESXi, VMware vSphere, VMware vSphere Hypervisor.
Severity of this weakness: 2/4.
Creation date: 15/06/2010.
Références of this bulletin: 598197, 7673, BID-40863, CVE-2010-2089, FEDORA-2010-13388, FEDORA-2010-9565, FEDORA-2010-9652, MDVSA-2010:132, openSUSE-SU-2010:1049-1, RHSA-2011:0027-01, RHSA-2011:0491-01, SUSE-SR:2010:024, SUSE-SR:2011:002, VIGILANCE-VUL-9708.

Description of the vulnerability 

The audioop module of Python is used to manage audio records.

Several audioop_*() functions of the Modules/audioop.c file do not check the size of theirs parameters, which forces a read/write at an invalid memory address.

An attacker can therefore invite the victim to open a malicious audio file, in order to generate a denial of service or to execute code, in applications using Python audioop.
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This weakness alert impacts software or systems such as Fedora, Mandriva Linux, openSUSE, Python, RHEL, SLES, ESX, ESXi, VMware vSphere, VMware vSphere Hypervisor.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this security bulletin.

Solutions for this threat 

Python: version 2.7.
The version 2.7 is corrected:
  http://www.python.org/

Python: version 2.5.6.
The version 2.5.6 is corrected:
  http://www.python.org/download/releases/2.5.6/

Python: patch for audioop.
A patch is available in information sources.

Fedora 13: new python3 packages.
New packages are available:
  python3-3.1.2-7.fc13

Fedora: new python packages.
New packages are available:
  python-2.6.2-8.fc12
  python-2.6.4-27.fc13

Mandriva: new python packages.
New packages are available:
  Mandriva Linux 2008.0: python-2.5.2-2.7mdv2008.0
  Mandriva Linux 2009.0: python-2.5.2-5.6mdv2009.0
  Mandriva Linux 2009.1: python-2.6.1-6.4mdv2009.1
  Mandriva Linux 2010.0: python-2.6.4-1.3mdv2010.0
  Mandriva Linux 2010.1: python-2.6.5-2.1mdv2010.1
  Corporate 4.0: python-2.4.5-0.6.20060mlcs4
  Mandriva Enterprise Server 5: python-2.5.2-5.7mdvmes5.1

openSUSE 11.2: new python packages.
New packages are available:
  python-2.6.2-6.7.1

RHEL 4: new python packages.
New packages are available:
  python-2.3.4-14.10.el4

RHEL 5: new python packages.
New packages are available:
  python-2.4.3-43.el5

SUSE: new packages (25/01/2011).
New packages are available, as indicated in information sources.

SUSE: new packages (28/12/2010).
New packages are available, as indicated in information sources.

VMware ESX 4.0: patch ESX400-201203001.
A patch is available:
  ESX400-201203001.zip
  http://kb.vmware.com/kb/2011767

VMware ESXi 4.0: patch ESXi400-201203001.
A patch is available:
  ESXi400-201203001.zip
  http://kb.vmware.com/kb/2011768

VMware ESXi 4.1: patch ESXi410-201201001.
A patch is available:
  ESXi410-201201001.zip
  http://downloads.vmware.com/go/selfsupport-download
  http://kb.vmware.com/kb/2009137
  http://kb.vmware.com/kb/2009144

VMware ESXi 5.0: patch ESXi500-201203101-SG.
The patch ESXi500-201203101-SG is available (in 5 Update 1):
  update-from-esxi5.0-5.0_update01
  http://downloads.vmware.com/go/selfsupport-download
  http://kb.vmware.com/kb/2011432

VMware ESXi 5.0: version 5 Update 1.
The version 5 Update 1 is corrected:
  update-from-esxi5.0-5.0_update01
  http://downloads.vmware.com/go/selfsupport-download
  http://kb.vmware.com/kb/2011432
  http://kb.vmware.com/kb/2010823
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