{"id":"CVE-2013-4347","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-4347","generatedAt":"2026-10-27T19:56:32.583Z","title":"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.","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.","published":"2014-05-20T14:55:04.000Z","lastModified":"2026-06-16T23:57:04.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":5.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N"},"cwe":["CWE-310"],"affected":["urbanairship/python-oauth2"],"epss":{"score":0.0245,"percentile":0.84269,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2013/09/12/7","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/62388","source":"secalert@redhat.com"},{"url":"https://github.com/simplegeo/python-oauth2/issues/9","source":"secalert@redhat.com"},{"url":"https://github.com/simplegeo/python-oauth2/pull/146","source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2013/09/12/7","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/62388","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/simplegeo/python-oauth2/issues/9","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/simplegeo/python-oauth2/pull/146","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4347","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}