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"cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-pip-0:19.3.1-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-24T00:00:00Z"}, {"advisory": "RHSA-2021:3254", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-urllib3-0:1.25.7-7.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-24T00:00:00Z"}], "bugzilla": {"description": "python: urllib: Regular expression DoS in AbstractBasicAuthHandler", "id": "1995234", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1995234"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.", "There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability."], "name": "CVE-2021-3733", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "python", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "python", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "python3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "python36:3.6/python36", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2021-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3733\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3733\nhttps://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-14-final\nhttps://docs.python.org/3.7/whatsnew/changelog.html#python-3-7-11-final\nhttps://docs.python.org/3.8/whatsnew/changelog.html#python-3-8-10-final\nhttps://docs.python.org/3.9/whatsnew/changelog.html#python-3-9-5-final"], "statement": "Applications that use AbstractBasicAuthHandler, HTTPBasicAuthHandler and ProxyBasicAuthHandler may be affected by this flaw. Other classes may use the vulnerable method http_error_auth_reqed in AbstractBasicAuthHandler as well.\nThis flaw is out of support scope for versions of Python shipped in Red Hat Enterprise Linux 7 base OS and Red Hat Enterprise Linux 6. For more information about support life cycles, please see https://access.redhat.com/support/policy/updates/errata/", "threat_severity": "Moderate"}

{}