{"id":"CVE-2016-1494","aliases":["GHSA-8rjr-6qq5-pj9p","PYSEC-2016-10"],"url":"https://o3.security/vulnerability/CVE-2016-1494","summary":"Python RSA allows attackers to spoof signatures","details":"The verify function in the RSA package for Python (Python-RSA) before 3.3 allows attackers to spoof signatures with a small public exponent via crafted signature padding, aka a BERserk attack.","published":"2016-01-13T15:59:02.787Z","modified":"2026-04-16T06:20:12.793908791Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"rsa","fixedVersion":"3.3"}],"fix":{"url":"https://github.com/sybrenstuvel/python-rsa/commit/ab5d21c3b554f926d51ff3ad9c794bcf32e95b3c","label":"sybrenstuvel/python-rsa@ab5d21c"},"references":[{"type":"ADVISORY","url":"http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175897.html"},{"type":"ADVISORY","url":"http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175942.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-updates/2016-01/msg00032.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/01/05/1"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/01/05/3"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/79829"},{"type":"FIX","url":"https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attack-in-verify-by/diff"},{"type":"EVIDENCE","url":"https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-1494"},{"type":"WEB","url":"https://github.com/sybrenstuvel/python-rsa/commit/ab5d21c3b554f926d51ff3ad9c794bcf32e95b3c"},{"type":"WEB","url":"https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2016-10.yaml"},{"type":"PACKAGE","url":"https://github.com/sybrenstuvel/python-rsa"},{"type":"WEB","url":"https://web.archive.org/web/20210123020914/http://www.securityfocus.com/bid/79829"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T06:20:12.793908791Z"}}