[ GLSA 200807-16 ] Python: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Python: Multiple vulnerabilities (GLSA 200807-16)
Severity: normal
Exploitable: remote
Date: July 31, 2008
Updated: July 19, 2009
Bug(s): #230640, #232137
ID: 200807-16

Synopsis


Multiple vulnerabilities in Python may allow for the execution of arbitrary
code.


Background


Python is an interpreted, interactive, object-oriented programming
language.


Affected Packages

Package: dev-lang/python
Vulnerable: < 2.5.2-r6
Unaffected: >= 2.4.4-r14 < 2.4.5
Unaffected: >= 2.5.2-r6
Unaffected: >= 2.4.6 < 2.4.7
Architectures: All supported architectures


Description


Multiple vulnerabilities were discovered in Python:

• 
  David Remahl of Apple Product Security reported several integer
  overflows in core modules such as stringobject, unicodeobject,
  bufferobject, longobject, tupleobject, stropmodule, gcmodule,
  mmapmodule (CVE-2008-2315).
  
• 
  David Remahl of Apple Product Security also reported an integer
  overflow in the hashlib module, leading to unreliable cryptographic
  digest results (CVE-2008-2316).
  
• 
  Justin Ferguson reported multiple buffer overflows in unicode string
  processing that only affect 32bit systems (CVE-2008-3142).
  
• 
  The Google Security Team reported multiple integer overflows
  (CVE-2008-3143).
  
• 
  Justin Ferguson reported multiple integer underflows and overflows in
  the PyOS_vsnprintf() function, and an off-by-one error when passing
  zero-length strings, leading to memory corruption (CVE-2008-3144).
  

Impact


A remote attacker could exploit these vulnerabilities in Python
applications or daemons that pass user-controlled input to vulnerable
functions. Exploitation might lead to the execution of arbitrary code
or a Denial of Service. Vulnerabilities within the hashlib might lead
to weakened cryptographic protection of data integrity or authenticity.


Workaround


There is no known workaround at this time.


Resolution


All Python 2.4 users should upgrade to the latest version: