Test Kennung:	1.3.6.1.4.1.25623.1.1.2.2019.1813
Kategorie:	Huawei EulerOS Local Security Checks
Titel:	Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1813)
Zusammenfassung:	The remote host is missing an update for the Huawei EulerOS 'kernel' package(s) announced via the EulerOS-SA-2019-1813 advisory.
Beschreibung:	Summary: The remote host is missing an update for the Huawei EulerOS 'kernel' package(s) announced via the EulerOS-SA-2019-1813 advisory. Vulnerability Insight: The Linux kernel 4.x (starting from 4.1) and 5.x before 5.0.8 allows Information Exposure (partial kernel address disclosure), leading to a KASLR bypass. Specifically, it is possible to extract the KASLR kernel image offset using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). This key contains enough bits from a kernel address (of a static variable) so when the key is extracted (via enumeration), the offset of the kernel image is exposed. This attack can be carried out remotely, by the attacker forcing the target device to send UDP or ICMP (or certain other) traffic to attacker-controlled IP addresses. Forcing a server to send UDP traffic is trivial if the server is a DNS server. ICMP traffic is trivial if the server answers ICMP Echo requests (ping). For client targets, if the target visits the attacker's web page, then WebRTC or gQUIC can be used to force UDP traffic to attacker-controlled IP addresses. NOTE: this attack against KASLR became viable in 4.1 because IP ID generation was changed to have a dependency on an address associated with a network namespace.(CVE-2019-10639) Affected Software/OS: 'kernel' package(s) on Huawei EulerOS V2.0SP5. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Querverweis:	Common Vulnerability Exposure (CVE) ID: CVE-2019-10639
Copyright	Copyright (C) 2020 Greenbone Networks GmbH

Dies ist nur einer von 99761 Anfälligkeitstests in unserem Testpaket. Finden Sie mehr über unsere vollständigen Sicherheitsüberprüfungen heraus. Um einen gratis Test für diese Anfälligkeit auf Ihrem System durchlaufen zu lassen, registrieren Sie sich bitte unten.