{
  "threat_severity" : "Moderate",
  "public_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"
  },
  "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." ],
  "statement" : "This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3, 4 and 5.",
  "acknowledgement" : "Red Hat would like to thank MIT Kerberos Team for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2010-11-30T00:00:00Z",
    "advisory" : "RHSA-2010:0925",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "krb5-0:1.8.2-3.el6_0.3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "krb5",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2010-4020\nhttps://nvd.nist.gov/vuln/detail/CVE-2010-4020" ],
  "name" : "CVE-2010-4020",
  "csaw" : false
}