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{"bugzilla": {"description": "cifs-utils: Container can use kerberos cache from the host via mount.cifs/cifs.upcall", "id": "1921116", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921116"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:N", "status": "draft"}, "cwe": "CWE-266", "details": ["A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity.", "A flaw was found in cifs-utils. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity."], "mitigation": {"lang": "en:us", "value": "DFS and multiuser mounts can be disabled in the container SMB mounts options i.e. adding 'nodfs' and removing 'multiuser' (if present)."}, "name": "CVE-2021-20208", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "cifs-utils", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "samba4", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "cifs-utils", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "cifs-utils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "cifs-utils", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-04-12T09:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-20208\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20208\nhttps://bugzilla.samba.org/show_bug.cgi?id=14651"], "statement": "This flaw is rated as having Moderate impact because of the need to have elevated privileges and limited possibilities of the attack: an attacker will not get actual credentials cache accessed by themselves, but might cause an authentication attempt to an SMB server and may be succeed in file access.", "threat_severity": "Moderate", "upstream_fix": "cifs-utils 6.13"}