Test Kennung:	1.3.6.1.4.1.25623.1.1.2.2019.1672
Kategorie:	Huawei EulerOS Local Security Checks
Titel:	Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1672)
Zusammenfassung:	The remote host is missing an update for the Huawei EulerOS 'kernel' package(s) announced via the EulerOS-SA-2019-1672 advisory.
Beschreibung:	Summary: The remote host is missing an update for the Huawei EulerOS 'kernel' package(s) announced via the EulerOS-SA-2019-1672 advisory. Vulnerability Insight: An integer overflow flaw was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment (SACK) segments. While processing SACK segments, the Linux kernel's socket buffer (SKB) data structure becomes fragmented. Each fragment is about TCP maximum segment size (MSS) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS). (CVE-2019-11477) Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service (CVE-2019-11478) Kernel: tcp: excessive resource consumption for TCP connections with low MSS allows remote denial of service (CVE-2019-11479) In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.(CVE-2018-7191) A flaw was found in the Linux kernel where the coredump implementation does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs. This allows local users to obtain sensitive information, cause a denial of service (DoS), or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls.(CVE-2019-11599) An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.(CVE-2018-20836) A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls.(CVE-2019-3901) A flaw was found in the Linux kernel, prior to version 5.0.7, in drivers/scsi/megaraid/megaraid_sas_base.c, where a NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds(). An attacker can crash the system if they were able to load the megaraid_sas kernel module and groom memory beforehand, leading to a denial of service (DoS), related to a use-after-free.(CVE-2019-11810) A vulnerability was found in polkit. When authentication is performed by a ... [Please see the references for more information on the vulnerabilities] Affected Software/OS: 'kernel' package(s) on Huawei EulerOS V2.0SP3. Solution: Please install the updated package(s). CVSS Score: 9.3 CVSS Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Querverweis:	Common Vulnerability Exposure (CVE) ID: CVE-2018-7191 BugTraq ID: 108380 http://www.securityfocus.com/bid/108380 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743792 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696d https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9 https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696d https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9 SuSE Security Announcement: openSUSE-SU-2019:1479 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html SuSE Security Announcement: openSUSE-SU-2019:1570 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html SuSE Security Announcement: openSUSE-SU-2019:1579 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html Common Vulnerability Exposure (CVE) ID: CVE-2019-3901 BugTraq ID: 89937 http://www.securityfocus.com/bid/89937 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901 https://security.netapp.com/advisory/ntap-20190517-0005/ https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html Common Vulnerability Exposure (CVE) ID: CVE-2019-6133 BugTraq ID: 106537 http://www.securityfocus.com/bid/106537 https://bugs.chromium.org/p/project-zero/issues/detail?id=1692 https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81 https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19 https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html RedHat Security Advisories: RHSA-2019:0230 https://access.redhat.com/errata/RHSA-2019:0230 RedHat Security Advisories: RHSA-2019:0420 https://access.redhat.com/errata/RHSA-2019:0420 RedHat Security Advisories: RHSA-2019:0832 https://access.redhat.com/errata/RHSA-2019:0832 RedHat Security Advisories: RHSA-2019:2699 https://access.redhat.com/errata/RHSA-2019:2699 RedHat Security Advisories: RHSA-2019:2978 https://access.redhat.com/errata/RHSA-2019:2978 SuSE Security Announcement: openSUSE-SU-2019:1914 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html https://usn.ubuntu.com/3901-1/ https://usn.ubuntu.com/3901-2/ https://usn.ubuntu.com/3903-1/ https://usn.ubuntu.com/3903-2/ https://usn.ubuntu.com/3908-1/ https://usn.ubuntu.com/3908-2/ https://usn.ubuntu.com/3910-1/ https://usn.ubuntu.com/3910-2/ https://usn.ubuntu.com/3934-1/ https://usn.ubuntu.com/3934-2/
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