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{"acknowledgement": "Red Hat would like to thank MIT Kerberos Team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2010:0925", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "krb5-0:1.8.2-3.el6_0.3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2010-11-30T00:00:00Z"}], "bugzilla": {"description": "krb5: krb5 may accept authdata checksums with low-entropy derived keys (MITKRB5-SA-2010-007)", "id": "648735", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=648735"}, "csaw": false, "cvss": {"cvss_base_score": "3.5", "cvss_scoring_vector": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "status": "verified"}, "details": ["MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."], "name": "CVE-2010-4020", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "krb5", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2010-11-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2010-4020\nhttps://nvd.nist.gov/vuln/detail/CVE-2010-4020"], "statement": "This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3, 4 and 5.", "threat_severity": "Moderate"}