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{"acknowledgement": "Red Hat would like to thank Jay LV (antgroup) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:1598", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "bluez-0:5.52-4.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1598", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "bluez-0:5.52-4.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "bluez: double free in gatttool client disconnect callback handler in src/shared/att.c could lead to DoS or RCE", "id": "1884817", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1884817"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event."], "mitigation": {"lang": "en:us", "value": "This flaw can be mitigated by only connecting the gatttool client to trusted GATT servers/devices. The flaw is in the service discovery which occurs after a Bluetoth Low Energy (BLE) connection has been established to a device. A secondary mitigation for this flaw is to disable bluetooth.  Instructions on disabling bluetooth in Red Hat Enterprise Linux are available at: https://access.redhat.com/solutions/2682931"}, "name": "CVE-2020-27153", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "bluez-gnome", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "bluez", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "bluez", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-09-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-27153\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-27153"], "threat_severity": "Moderate"}