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{"acknowledgement": "Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Andrei Popa as the original reporter.", "bugzilla": {"description": "samba: Use-after-free in Samba AD DC LDAP Server with ASQ", "id": "1825731", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1825731"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["A use-after-free flaw was found in the way samba AD DC LDAP servers, handled 'Paged Results' control is combined with the 'ASQ' control. A malicious user in a samba AD could use this flaw to cause denial of service. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2."], "mitigation": {"lang": "en:us", "value": "As per upstream, the crash is hard to trigger, and relies in particular on the chain of child and grandchild links being queried with ASQ. Malicious users without write access will need to find a suitable chain within the existing directory layout."}, "name": "CVE-2020-10700", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "samba3x", "product_name": "Red Hat Enterprise Linux 5"}, {"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": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Not affected", "package_name": "samba", "product_name": "Red Hat Storage 3"}], "public_date": "2020-04-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-10700\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-10700\nhttps://www.samba.org/samba/security/CVE-2020-10700.html"], "statement": "This flaw does not affect the version of samba shipped with Red Hat Enterprise Linux as there is no support for samba as an Active Directory Domain Controller (AD DC). Similarly, the version of samba shipped with Red Hat Gluster Storage 3 is also not supported for use as an AD DC and, thus, is not affected by this vulnerability.", "threat_severity": "Moderate", "upstream_fix": "samba 4.10.15, samba 4.11.8, samba 4.12.2"}