Exploit for Race Condition in Canonical Ubuntu_Linux

PoC exploit for CVE-2016-5195 Dirty COW. The target product/service is Linux, specifically the vDSO Virtual Dynamic Shared Object component. The vulnerability class/vector is a privilege escalation vulnerability, allowing an unprivileged user to gain root privileges. The probable entry point is t...

CVE-2020-25221

A flaw was found in the getgatepage in mm/gup.c in the Linux kernel, where it allows privilege escalation due to incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This flaw is triggered by any 64-bit...

Microsoft Azure Sphere Normal World application ptrace unsigned code execution vulnerability

Summary A code execution vulnerability exists in the normal world’s signed code execution functionality of Microsoft Azure Sphere 20.05. A specially crafted shellcode can cause a process’ non-writable memory to be written. An attacker can execute a shellcode that uses the ptrace system call to...

kernel: perf_event_open() and execve() race in setuid programs allows a data leak

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1602-1)

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called...

kernel: perf_event_open() and execve() race in setuid programs allows a data leak

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

Exploit for Race Condition in Canonical Ubuntu_Linux

This is a PoC Proof of Concept exploit for CVE-2016-5195, also known as Dirty COW. The exploit relies on ptrace to patch the vDSO Virtual Dynamic Shared Object and gain root privileges. The exploit is architecture-dependent and may not work on every Linux version. The payload is written in assemb...

The vulnerability of the ptrace_link function in Linux operating systems allows a hacker to trigger a service failure or increase their privileges.

The vulnerability of the ptracelink function in Linux operating systems is related to deficiencies in access control. Exploiting this vulnerability can allow an attacker to cause system failures or increase their privileges by using the system call execve...

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...

goBox - GO Sandbox To Run Untrusted Code

GO sandbox to run untrusted code. goBox uses Ptrace to hook into READ syscalls, giving you the option to accept or deny syscalls before they are executed. Usage Usage of ./gobox: gobox FLAGS command flags: -h Print Usage. -n value A glob pattern for automatically blocking file reads. -y value A...

Denial Of Service (DoS)

kernel is vulnerable to denial of service DoS. The vulnerability exists as a flaw was found in ptrace support that allowed a local user to cause a denial of service via a NULL pointer dereference...

kernel: perf_event_open() and execve() race in setuid programs allows a data leak

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

kernel: perf_event_open() and execve() race in setuid programs allows a data leak

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

BSA-2020-918

Security Advisory ID : BSA-2020-918 Component : Linux Kernel Revision : 1.0: Final The Linux kernel before 2.4.36-rc1 has a race condition. It was possibleto bypass systrace policies by flooding the ptraced process with SIGCONTsignals, which can can wake up a PTRACED process...

The vulnerability of the ptrace subsystem in the Linux operating system allows a hacker to disclose protected information.

The vulnerability of the ptrace subsystem in the Linux operating system is related to errors in implementing measures to protect against Spectre-class vulnerabilities. Exploiting this vulnerability can allow an attacker to exploit the protected mechanisms...

USN-4162-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

It was discovered that the RSI 91x Wi-Fi driver in the Linux kernel did not did not handle detach operations correctly, leading to a use-after-free vulnerability. A physically proximate attacker could use this to cause a denial of service system crash or possibly execute arbitrary code...

USN-4157-2 linux-hwe, linux-azure, linux-gcp, linux-gke-5.0 vulnerabilities

USN-4157-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.04. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 19.04 for Ubuntu 18.04 LTS. Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly...

Ubuntu 19.04 : Linux kernel vulnerabilities (USN-4157-1)

Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux kernel did not properly perform bounds checking, leading to a heap overflow. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2019-14814, CVE-2019-14815,...

Debian DSA-4531-1 : linux - security update

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. - CVE-2019-14821 Matt Delco reported a race condition in KVM's coalesced MMIO facility, which could lead to out-of-bounds access in the kernel. A local...

kernel: broken permission and object lifetime handling for PTRACE_TRACEME

A flaw was found in the way PTRACETRACEME functionality was handled in the Linux kernel. The kernel's implementation of ptrace can inadvertently grant elevated permissions to an attacker who can then abuse the relationship between the tracer and the process being traced. This flaw could allow a...