Vulnerability CVE-2013-4347
Published: 2014-05-20

Description:
The (1) make_nonce, (2) generate_nonce, and (3) generate_verifier functions in SimpleGeo python-oauth2 uses weak random numbers to generate nonces, which makes it easier for remote attackers to guess the nonce via a brute force attack.

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
4.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Urbanairship -> Python-oauth2 

 References:
http://www.openwall.com/lists/oss-security/2013/09/12/7
http://www.securityfocus.com/bid/62388
https://github.com/simplegeo/python-oauth2/issues/9
https://github.com/simplegeo/python-oauth2/pull/146
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