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[ GLSA 200807-16 ] Python: Multiple vulnerabilities
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GLSA
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PostPosted: Fri Aug 01, 2008 12:26 am    Post subject: [ GLSA 200807-16 ] Python: Multiple vulnerabilities Reply with quote

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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-2.4.4-r14"
All Python 2.5 users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-2.5.2-r6"
Please note that Python 2.3 is masked since June 24, and we will not be releasing updates to it. It will be removed from the tree in the near future.

References

CVE-2008-2315
CVE-2008-2316
CVE-2008-3142
CVE-2008-3143
CVE-2008-3144


Last edited by GLSA on Mon Jul 20, 2009 4:18 am; edited 3 times in total
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