Linux: IP Forwarding

The net.ipv4.ipforward and net.ipv6.conf.all.forwarding flags are used to tell the system whether it can forward packets or not. SPDX-FileCopyrightText: 2019 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...

Linux: ICMP Redirect (accept)

ICMP Redirects are used to update a hosts routing information, if e.g. an alternative and possible more direct route is available. If the host does not act as a router, ICMP Redirects are not needed. Further more, an attacker could use corrupt routing to have users access a system set up by the...

Linux Kernel 4.4.0-21 < 4.4.0-51 (Ubuntu 14.04/16.04 x64) - 'AF_PACKET' Race Condition Privilege Escalation

/ chocoboroot.c linux AFPACKET race condition exploit for CVE-2016-8655. Includes KASLR and SMEP/SMAP bypasses. For Ubuntu 14.04 / 16.04 x8664 kernels 4.4.0 before 4.4.0-53.74. All kernel offsets have been tested on Ubuntu / Linux Mint. vroom vroom ============================== user@ubuntu:$ una...

CVE-2018-17156

In FreeBSD before 11.2-STABLEr340268 and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl...

CVE-2018-17156

CVE-2018-17156 affects FreeBSD releases prior to 11.2-STABLE (r340268) and 11.2-RELEASE-p5. The issue stems from incorrect padding accounting on 64-bit platforms when constructing an ICMP reply packet using a non-standard value for net.inet.icmp.quotelen, which can lead to a buffer underwrite. Af...

OracleVM 3.3 / 3.4 : procps (OVMSA-2018-0226)

The remote OracleVM system is missing necessary patches to address critical security updates : - vmstat: fix invalid CPU utilization stats after vCPU hot-plug/unplug Konrad Rzeszutek Wilk bug 18011019 - drop leftover assignment in fix for CVE-2018-1124 causing a severe regression - Resolves:...

CVE-2017-18188

CVE-2017-18188 affects OpenRC opentmpfiles up to version 0.1.3. When the fs.protected_hardlinks sysctl is disabled, local users can cause a file ownership change by creating a hard link inside a directory that will later be processed by a recursive chown -R. The root cause is the interaction betw...

CVE-2018-6954

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. Th...

openSUSE Security Update : systemd (openSUSE-2018-117)

This update for systemd fixes several issues. This security issue was fixed : - CVE-2018-1049: Prevent race that can lead to DoS when using automounts bsc1076308. These non-security issues were fixed : - core: don't choke if a unit another unit triggers vanishes during reload - delta: don't ignor...

CVE-2017-18078

systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protectedhardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks...

systemd (systemd-tmpfiles) < 236 - 'fs.protected_hardlinks=0' Local Privilege Escalation

Product: systemd systemd-tmpfiles Versions-affected: 236 and earlier Author: Michael Orlitzky Fixed-in: commit 5579f85 , version 237 Bug-report: https://github.com/systemd/systemd/issues/7736 Acknowledgments: Lennart Poettering who, instead of calling me an idiot for not realizing that systemd...

OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0007) (Spectre)

The remote OracleVM system is missing necessary patches to address critical security updates : - x86/ibrs: Remove 'ibrsdump' and remove the prdebug Konrad Rzeszutek Wilk Orabug: 27350825 - kABI: Revert kABI: Make the bootcpudata look normal Konrad Rzeszutek Wilk CVE-2017-5715 - userns: prevent...

CVE-2017-16995

The checkaluop function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service memory corruption or possibly have unspecified other impact by leveraging incorrect sign extension...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3651)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-3651 advisory. - mm, thp: Do not make page table dirty unconditionally in followtranshugepmd Kirill A. Shutemov Orabug: 27200879 CVE-2017-1000405 - fix unbalanced...

OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0169)

The remote OracleVM system is missing necessary patches to address critical security updates : - thp: run vmaadjusttranshuge outside immaprwsem Kirill A. Shutemov Orabug: 27026180 - selinux: fix off-by-one in setprocattr Stephen Smalley Orabug: 27001717 CVE-2017-2618 CVE-2017-2618 CVE-2017-2618 -...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3640)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-3640 advisory. - selinux: fix off-by-one in setprocattr Stephen Smalley Orabug: 27001717 CVE-2017-2618 CVE-2017-2618 CVE-2017-2618 - sysctl: Drop reference added ...

Unbreakable Enterprise kernel security update

4.1.12-103.9.4 - thp: run vmaadjusttranshuge outside immaprwsem Kirill A. Shutemov Orabug: 27026180 4.1.12-103.9.3 - selinux: fix off-by-one in setprocattr Stephen Smalley Orabug: 27001717 CVE-2017-2618 CVE-2017-2618 CVE-2017-2618 - sysctl: Drop reference added by grabheader in procsysreaddir Zho...

CVE-2016-10089

A vulnerability was found in Nagios 4.2.4, and earlier, which allows local users to gain root privileges via a hard link attack on the Nagios init script file, related to CVE-2016-8641. Mitigation This flaw, and others like it, are mitigated by enabling hardlink and symlink protections. These...

Ubuntu: Security Advisory (USN-3422-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3422-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3422-1 advisory. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically...