{
  "threat_severity" : "Moderate",
  "public_date" : "2011-07-09T00:00:00Z",
  "bugzilla" : {
    "description" : "qemu: when started as root, extra groups are not dropped correctly",
    "id" : "720773",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=720773"
  },
  "cvss" : {
    "cvss_base_score" : "3.7",
    "cvss_scoring_vector" : "AV:L/AC:H/Au:N/C:P/I:P/A:P",
    "status" : "verified"
  },
  "details" : [ "The change_process_uid function in os-posix.c in Qemu 0.14.0 and earlier does not properly drop group privileges when the -runas option is used, which allows local guest users to access restricted files on the host.", "Cause: qemu did not properly drop extra group privileges when started as root with the -runas commandline option.\nConsequence: extra GID's would give qemu elevated privileges to read or write files that the supplementary groups allowed, because qemu is still running with group root privileges.\nFix:  Added an initgroups(3) call to use the -runas user's /etc/groups membership to update the supplementary group IDs.\nResult: extra group privileges are now properly dropped when using -runas." ],
  "statement" : "Future qemu-kvm updates in Red Hat Enterprise Linux 6 may address this flaw. This issue did not affect the versions of qemu-kvm as shipped with Red Hat Enterprise Linux 5 as it did not include support for \"run as\" functionality.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2011-12-05T00:00:00Z",
    "advisory" : "RHSA-2011:1531",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "qemu-kvm-2:0.12.1.2-2.209.el6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kvm",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2011-2527\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2527" ],
  "name" : "CVE-2011-2527",
  "csaw" : false
}