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{"affected_release": [{"advisory": "RHSA-2020:3541", "cpe": "cpe:/a:redhat:openshift:3.11::el7", "package": "python-rsa-0:4.5-2.el7", "product_name": "Red Hat OpenShift Container Platform 3.11", "release_date": "2020-08-27T00:00:00Z"}, {"advisory": "RHSA-2020:3453", "cpe": "cpe:/a:redhat:openshift:4.5::el7", "package": "python-rsa-0:4.5-1.el7", "product_name": "Red Hat OpenShift Container Platform 4.5", "release_date": "2020-08-18T00:00:00Z"}], "bugzilla": {"description": "python-rsa: decryption of ciphertext leads to DoS", "id": "1848507", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1848507"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-400->CWE-327", "details": ["Python-RSA before 4.1 ignores leading '\\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).", "A flaw was found in the python-rsa package, where it does not explicitly check the ciphertext length against the key size and ignores the leading 0 bytes during the decryption of the ciphertext. This flaw allows an attacker to perform a ciphertext attack, leading to a denial of service. The highest threat from this vulnerability is to confidentiality."], "name": "CVE-2020-13757", "package_state": [{"cpe": "cpe:/a:redhat:ceph_storage:4", "fix_state": "Affected", "package_name": "python-rsa", "product_name": "Red Hat Ceph Storage 4"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Will not fix", "package_name": "python-rsa", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:15", "fix_state": "Will not fix", "package_name": "python-rsa", "product_name": "Red Hat OpenStack Platform 15 (Stein)"}, {"cpe": "cpe:/a:redhat:openstack:16", "fix_state": "Will not fix", "package_name": "python-rsa", "product_name": "Red Hat OpenStack Platform 16 (Train)"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "python-rsa", "product_name": "Red Hat Quay 3"}], "public_date": "2020-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-13757\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-13757\nhttps://github.com/sybrenstuvel/python-rsa/issues/146"], "statement": "In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-rsa package.", "threat_severity": "Moderate", "upstream_fix": "python-rsa 4.1"}