CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

Linux userfaultfd tmpfs File Permission Bypass

Linux: userfaultfd bypasses tmpfs file permissions CVE-2018-18397 Using the userfaultfd API, it is possible to first register a userfaultfd region for any VMA that fulfills vmacanuserfault: It must be an anonymous VMA -vmops==NULL, a hugetlb VMA VMHUGETLB, or a shmem VMA -vmops==shmemvmops. This...

XNU POSIX Shared Memory Mapping Issue

XNU: POSIX shared memory mappings have incorrect maximum protection CVE-2018-4435 When the mmap syscall is invoked on a POSIX shared memory segment DTYPEPSXSHM, pshmmmap maps the shared memory segment's pages into the address space of the calling process. It does this with the following code: int...

A Post-Exploitation Scanning/Mapping Tool: Scavenger

SCAVENGER is a multi-threaded post-exploitation scanning tool for mapping systems and finding “interesting” and most frequently used files, folders and services. Once credentials are gained, it can scan remote systems Linux, Windows and OSX via services like SMB and SSH to scrape that system...

Xen elevation of privilege vulnerability (CNVD-2019-07942)

Xen is an open source virtual machine monitor developed by the Xen Project. An elevation of privilege vulnerability exists in 4.11.x and earlier versions of Xen on AMD x86 platforms, which stems from the fact that a TLB refresh is sometimes not performed after an IOMMU mapping change, and can be...

Xen elevation of privilege vulnerability (CNVD-2019-07941)

Xen is an open source virtual machine monitor developed by the Xen Project. An elevation of privilege vulnerability exists in 4.11.x and earlier versions of Xen on AMD x86 platforms, which stems from the failure of small IOMMU mappings to be securely combined into larger IOMMU mappings, which can...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

Design/Logic Flaw

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

UBUNTU-CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

ALPINE-CVE-2018-19964

An issue was discovered in Xen 4.11.x allowing x86 guest OS users to cause a denial of service host OS hang because the p2m lock remains unavailable indefinitely in certain error conditions...

DEBIAN-CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

ALPINE-CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

CVE-2018-19961

CVE-2018-19961 affects the Xen hypervisor up to 4.11.x on AMD x86, where guest OS users may gain host privileges due to TLB flushes not reliably occurring after IOMMU mapping changes. Public documents confirm Xen as the affected product and describe the root cause and potential privilege escalati...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

CVE-2018-19961

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes...

Track People on the Internet: trape

Trape is a OSINT analysis and research tool, which allows people to track and execute intelligent social engineering attacks in real time. It was created with the aim of teaching the world how large Internet companies could obtain confidential information such as the status of sessions of their...

Linux - Broken uidgid Mapping for Nested User Namespaces

Linux - Broken uidgid Mapping for Nested User Namespaces commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings excee...

Linux - Broken uid/gid Mapping for Nested User Namespaces

commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings exceeds 5: Instead of linear search over an unsorted array of...