What’s Vulnerable › Vulnerabilities

CVE-2013-4347

• Severity: medium (CVSS 5.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-05-20 · updated 2026-06-16
• Weakness: CWE-310

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.

Affected products

• Urbanairship Python-Oauth2: all versions

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
• 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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