USN-4574-1: libseccomp-golang vulnerability

It was discovered that libseccomp-golang did not properly generate BPFs. If a process were running under a restrictive seccomp filter that specified multiple syscall arguments, the application could potentially bypass the intended restrictions put in place by seccomp...

Debian DLA-2320-1 : golang-github-seccomp-libseccomp-golang security update

A process running under a restrictive seccomp filter that specified multiple syscall arguments could bypass intended access restrictions by specifying a single matching argument. Additionally, runc has been rebuilt with the fixed package. For Debian 9 stretch, this problem has been fixed in versi...

[SECURITY] [DLA 2320-1] golang-github-seccomp-libseccomp-golang security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-2320-1 [email protected] https://www.debian.org/lts/security/ August 10, 2020 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package...

SUSE SLES15 Security Update : nodejs10 (SUSE-SU-2020:1568-1)

This update for nodejs10 fixes the following issues : nodejs10 was updated to version 10.21.0 CVE-2020-8174: Fixed multiple memory corruption in napigetvaluestring bsc1172443. CVE-2020-11080: Fixed a potential denial of service when receiving unreasonably large HTTP/2 SETTINGS frames bsc1172442...

Linux/x86 /etc/hosts Mapping Add Polymorphic Shellcode

102 bytes small Linux/x86 add map in /etc/hosts file polymorphic shellcode. Title: Linux/x86 - Add map in /etc/hosts file polymorphic shellcode 102 bytes Author: Xenofon Vassilakopoulos Date: 2020-06-15 Tested on: Linux kali 5.3.0-kali2-686-pae 1 SMP Debian 5.3.9-3kali1 2019-11-20 i686 GNU/Linux...

macOS/x64 zsh RickRolling - Shellcode

198 bytes small macOS/x64 RickRolling shellcode. / Shellcode Title: macOS/x64 - zsh RickRolling Shellcode 198 Bytes Shellcode Author: Bobby Cooke Date: May 31st, 2020 Tested on: macOS Catalina v10.15.4 Shellcode Description: MacOS Catalina Dynamic, No-Null Shellcode that will Unmute the systems...

macOS/x64 zsh RickRolling Shellcode (198 bytes)

/ Shellcode Title: macOS/x64 - zsh RickRolling Shellcode 198 Bytes Shellcode Author: Bobby Cooke Tested on: macOS Catalina v10.15.4 Shellcode Description: MacOS Catalina Dynamic, No-Null Shellcode that will Unmute the systems Volume, set the Volume to Maximum, and "Rick Roll" the user every time...

CVE-2020-10024

The arm platform-specific code uses a signed integer comparison when validating system call numbers. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 a...

CVE-2020-10024 ARM Platform Uses Signed Integer Comparison When Validating Syscall Numbers

The arm platform-specific code uses a signed integer comparison when validating system call numbers. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 a...

Linux 5.6 IORING_OP_MADVISE Race Condition

Linux 5.6 has an issue with IORINGOPMADVISE racing with coredumping. Linux 5.6: IORINGOPMADVISE races with coredumping Last year, I noticed that core dumping iterates over current-mm's VMA list without proper locking, under the assumption that the VMA list can not be modified externally. This...

Linux/x64 Anti-Debug Trick INT3 Trap Shellcode (113 bytes)

113 bytes small Linux/x64 anti-debug trick INT3 trap with execve"/bin/sh" shellcode that is NULL free. / Shellcode Title: linux/x64 anti-debug trick INT3 trap + execve"/bin/sh" - NULL Free - 113 bytes Shellcode Author: Dario Castrogiovanni Tested on: LXLE Linux 18.04 x64 Description: This shellco...

Linux Kernel /proc/pid/syscall information disclosure vulnerability

Summary An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0 and is still present in v5.10-rc4, so it’s likely that...

Linux/x64 - Password Protected Bindshell + Null-free Shellcode (272 Bytes)

Exploit Title: Linux/x64 - Password Protected Bindshell + Null-free Shellcode 272 Bytes Exploit Author: Bobby Cooke Tested on: Linux x8664 SMP Debian 5.3.15-1kali1 SLAE/Student ID: PA-10913 Course: This shellcode was created for the x8664 Assembly Language and Shellcoding on Linux SLAE64 Course...

Access Control Bypass

kernel-rt is vulnerable to access control bypass. The vulnerability could allow a local, unprivileged user to bypass intended access restrictions, if those access restriction filters were based on the "syscall" number or arguments...

Moderate: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

CVE-2020-8835

An out-of-bounds access flaw was found in the Linux kernel’s implementation of the eBPF code verifier, where an incorrect register bounds calculation while checking 32-bit instructions in an eBPF program occurs. This flaw allows an unprivileged user or process to execute eBPF programs to crash th...

CVE-2017-15128

A flaw was found in the Linux kernel where a local user with a shell account can abuse the userfaultfd syscall when using hugetlbfs. A missing size check in hugetlbmcopyatomicpte could create an invalid inode variable, leading to a kernel panic...

EulerOS 2.0 SP8 : libcomps (EulerOS-SA-2020-1293)

According to the versions of the libcomps packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A use-after-free flaw has been discovered in libcomps before version 0.1.10 in the way ObjMRTrees are merged. An attacker, who is able to make...

MGASA-2020-0136 Updated libseccomp packages fix security vulnerability

Updated libseccomp packages fix security vulnerability: Jann Horn discovered that libseccomp did not correctly generate 64-bit syscall argument comparisons with arithmetic operators LT, GT, LE, GE. An attacker could use this to bypass intended access restrictions for argument-filtered system call...

Updated libseccomp packages fix security vulnerability

Updated libseccomp packages fix security vulnerability: Jann Horn discovered that libseccomp did not correctly generate 64-bit syscall argument comparisons with arithmetic operators LT, GT, LE, GE. An attacker could use this to bypass intended access restrictions for argument-filtered system call...