kernel: userfaultfd bypasses tmpfs file permissions

The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.

User Enumeration in Moxa ThingsPro IIoT Gateway and Device Management Software Solutions version 2.1.

goform/getWlanClientInfo in Orange AirBox Y858_FL_01.16_04 allows remote attackers to discover information about currently connected devices (hostnames, IP addresses, MAC addresses, and connection time) via the rand parameter.

chromium-browser: Insufficient policy enforcement in Proxy

Lack of special casing of localhost in WPAD files in Google Chrome prior to 71.0.3578.80 allowed an attacker on the local network segment to proxy resources on localhost via a crafted WPAD file.

chromium-browser: Insufficient data validation in Shell Integration

Insufficient validate of external protocols in Shell Integration in Google Chrome on Windows prior to 71.0.3578.80 allowed a remote attacker to launch external programs via a crafted HTML page.

chromium-browser: Insufficient policy enforcement in Navigation

Lack of proper validation of ancestor frames site when sending lax cookies in Navigation in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to bypass SameSite cookie policy via a crafted HTML page.

chromium-browser: Inappropriate implementation in Navigation

Incorrect handling of failed navigations with invalid URLs in Navigation in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to trick a user into executing javascript in an arbitrary origin via a crafted HTML page.

A vulnerability in the Private Browser of Trend Micro Dr. Safety for Android (Consumer) versions below 3.0.1478 could allow an remote attacker to bypass the Same Origin Policy (SOP) and obtain sensitive information via crafted JavaScript code on vulnerable installations.

The MESILAT Zabbix plugin before 1.1.15 for Atlassian Confluence allows attackers to read arbitrary files.

On ASUS RT-AC58U 3.0.0.4.380_6516 devices, remote attackers can discover hostnames and IP addresses by reading dhcpLeaseInfo data in the HTML source code of the Main_Login.asp page.

wireshark: MS-WSP dissector crash

In Wireshark 2.6.0 to 2.6.3 and 2.4.0 to 2.4.9, the MS-WSP protocol dissector could crash. This was addressed in epan/dissectors/packet-mswsp.c by properly handling NULL return values.

wireshark: Steam IHS Discovery dissector memory leak

In Wireshark 2.6.0 to 2.6.3, the Steam IHS Discovery dissector could consume system memory. This was addressed in epan/dissectors/packet-steam-ihs-discovery.c by changing the memory-management approach.

wireshark: CoAP dissector crash

In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash. This was addressed in epan/dissectors/packet-coap.c by ensuring that the piv length is correctly computed.

Topvision CC8800 CMTS C-E devices allow remote attackers to obtain sensitive information via a direct request for /WebContent/startup.tar.gz with userName=admin in a cookie.

ghostscript: Saved execution stacks can leak operator arrays

Artifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of system operators in the saved execution stack in an error object.

An issue was discovered in the Texas Instruments (TI) TM4C, MSP432E and MSP432P microcontroller series. The eXecute-Only-Memory (XOM) implementation prevents code read-outs on protected memory by generating bus faults. However, single-stepping and using breakpoints is allowed in XOM-protected flash memory. As a consequence, it is possible to execute single instructions with arbitrary system states (e.g., registers, status flags, and SRAM content) and observe the state changes produced by the unknown instruction. An attacker could exploit this vulnerability by executing protected and unknown instructions with specific system states and observing the state changes. Based on the gathered information, it is possible to reverse-engineer the executed instructions. The processor acts as a kind of "instruction oracle."

kernel: Privilege escalation on arm64 via KVM hypervisor

arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.

An issue was discovered in GitLab Community Edition 11.x before 11.1.8, 11.2.x before 11.2.5, and 11.3.x before 11.3.2. There is Information Exposure via Epic change descriptions.

An issue was discovered in GitLab Community Edition 11.x before 11.1.8, 11.2.x before 11.2.5, and 11.3.x before 11.3.2. There is Information Exposure via the GFM markdown API.

kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.