python -- buffer overrun in repr() for unicode strings

Description:

Benjamin C. Wiley Sittler reports:

I discovered a [buffer overrun in repr() for unicode strings]. This causes an unpatched non-debug wide (UTF-32/UCS-4) build of python to abort.

Ubuntu security team reports:

If an application uses repr() on arbitrary untrusted data, this [bug] could be exploited to execute arbitrary code with the privileges of the python application.

References:

• CVE name CVE-2006-4980
• URL: <https://launchpad.net/distros/ubuntu/+source/python2.4/+bug/56633>
• URL: <http://www.ubuntu.com/usn/usn-359-1>
• URL: <http://secunia.com/advisories/22276/>

Affects:

• python+ipv6 >=0
• python <2.4.3_1
• python >2.5.* <2.5.c2

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