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| Test Kennung: | 1.3.6.1.4.1.25623.1.0.142321 |
| Kategorie: | Denial of Service |
| Titel: | ISC BIND DoS Vulnerability (CVE-2018-5743) - Windows |
| Zusammenfassung: | ISC BIND is prone to a denial of service vulnerability due to ineffective; simultaneous TCP client limiting. |
| Beschreibung: | Summary: ISC BIND is prone to a denial of service vulnerability due to ineffective simultaneous TCP client limiting. Vulnerability Insight: By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contains an error which can be exploited to grow the number of simultaneous connections beyond this limit. Vulnerability Impact: By exploiting the failure to limit simultaneous TCP connections, an attacker can deliberately exhaust the pool of file descriptors available to named, potentially affecting network connections and the management of files such as log files or zone journal files. In cases where the named process is not limited by OS-enforced per-process limits, this could additionally potentially lead to exhaustion of all available free file descriptors on that system. Affected Software/OS: BIND 9.9.0 to 9.10.8-P1, 9.11.0 to 9.11.6, 9.12.0 to 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 to 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 to 9.13.7 of the 9.13 development branch. Solution: Update to version 9.11.6-P1, 9.12.4-P1, 9.14.1, 9.11.5-S6, 9.11.6-S1 or later. CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P |
| Querverweis: |
Common Vulnerability Exposure (CVE) ID: CVE-2018-5743 |
| Copyright | Copyright (C) 2019 Greenbone Networks GmbH |
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