CVE-2010-1634: audioop integer overflows

Multiple integer overflows in audioop.c in the audioop module in Python 2.6, 2.7, 3.1, and 3.2 allow context-dependent attackers to cause a denial of service (application crash) via a large fragment, as demonstrated by a call to audioop.lin2lin with a long string in the first argument, leading to a buffer overflow.

NOTE: this vulnerability exists because of an incorrect fix for CVE-2008-3143.

  • Disclosure date: 2010-05-10 (Python issue #8674 reported)

Fixed In

Python issue

audioop: incorrect integer overflow checks.

  • Python issue: issue #8674
  • Creation date: 2010-05-10
  • Reporter: Tomas Hoger

CVE-2010-1634

Multiple integer overflows in audioop.c in the audioop module in Python 2.6, 2.7, 3.1, and 3.2 allow context-dependent attackers to cause a denial of service (application crash) via a large fragment, as demonstrated by a call to audioop.lin2lin with a long string in the first argument, leading to a buffer overflow. NOTE: this vulnerability exists because of an incorrect fix for CVE-2008-3143.5.

Timeline

Timeline using the disclosure date 2010-05-10 as reference:

  • 2010-05-10: Python issue #8674 reported by Tomas Hoger
  • 2010-05-11 (+1 days): commit 11bb2cd
  • 2010-05-11 (+1 days): commit 393b97a
  • 2010-05-11 (+1 days): commit 7ceb497
  • 2010-05-11 (+1 days): commit ee289e6
  • 2010-05-27 (+17 days): CVE-2010-1634 published
  • 2010-07-03: Python 2.7.0 released
  • 2010-08-24 (+106 days): Python 2.6.6 released
  • 2010-11-27 (+201 days): Python 3.1.3 released
  • 2011-02-20: Python 3.2.0 released