Design/Logic Flaw

An issue was discovered in splitregion in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the...

PYSEC-2021-868

An issue was discovered in splitregion in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the...

CVE-2021-44078

CVE-2021-44078 affects Unicorn Engine prior to 2.0.0-rc5. The issue is in the split_region path of uc.c (virtual memory manager) where a faulty comparison of GVA and GPA during uc_mem_map_ptr frees part of a claimed memory block, enabling a local attacker to escape the sandbox and execute arbitra...

py39-unicorn -- sandbox escape and arbitrary code execution vulnerability

jwang-a reports: An issue was discovered in splitregion in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks

A flaw was found in the Linux kernel’s KVM implementation, where improper handing of the VMIO|VMPFNMAP VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest. This flaw allows users who can start and control a VM to read/write random pages of...

Debian DLA-2690-1 : linux-4.19 security update

Several vulnerabilities have been discovered in the Linux kernel that may lead to the execution of arbitrary code, privilege escalation, denial of service, or information leaks. CVE-2020-24586, CVE-2020-24587, CVE-2020-26147 Mathy Vanhoef discovered that many Wi-Fi implementations, including...

Debian DLA-2689-1 : linux - LTS security update

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2689 advisory. Several vulnerabilities have been discovered in the Linux kernel that may lead to the execution of arbitrary code, privilege escalation, denial of service, or...

[SECURITY] [DLA 2689-1] linux security update

Debian LTS Advisory DLA-2689-1 [email protected] https://www.debian.org/lts/security/ Ben Hutchings June 22, 2021 https://wiki.debian.org/LTS Package : linux Version : 4.9.272-1 CVE ID : CVE-2020-24586 CVE-2020-24587 CVE-2020-24588 CVE-2020-25670 CVE-2020-25671 CVE-2020-25672...

[SECURITY] [DLA 2690-1] linux-4.19 security update

Debian LTS Advisory DLA-2690-1 [email protected] https://www.debian.org/lts/security/ Ben Hutchings June 22, 2021 https://wiki.debian.org/LTS Package : linux-4.19 Version : 4.19.194-1deb9u1 CVE ID : CVE-2020-24586 CVE-2020-24587 CVE-2020-24588 CVE-2020-25670 CVE-2020-25671 CVE-2020-2567...

CVE-2021-0230 Junos OS: SRX Series: Memory leak when querying Aggregated Ethernet (AE) interface statistics

On Juniper Networks SRX Series devices with link aggregation lag configured, executing any operation that fetches Aggregated Ethernet AE interface statistics, including but not limited to SNMP GET requests, causes a slow kernel memory leak. If all the available memory is consumed, the traffic wil...

CVE-2021-0230

CVE-2021-0230 affects Juniper Networks Junos OS on SRX Series devices with link aggregation (lag). When performing operations that fetch AE interface statistics (e.g., SNMP GET), a slow kernel memory leak can consume memory, potentially impacting traffic and requiring a reboot. Affected versions ...

FreeBSD : FreeBSD -- Memory disclosure by stale virtual memory mapping (13d37672-9791-11eb-b87a-901b0ef719ab)

A particular case of memory sharing is mishandled in the virtual memory system. It is possible and legal to establish a relationship where multiple descendant processes share a mapping which shadows memory of an ancestor process. In this scenario, when one process modifies memory through such a...

FreeBSD -- Memory disclosure by stale virtual memory mapping

Problem Description: A particular case of memory sharing is mishandled in the virtual memory system. It is possible and legal to establish a relationship where multiple descendant processes share a mapping which shadows memory of an ancestor process. In this scenario, when one process modifies...

Windows Exploitation Tricks: Trapping Virtual Memory Access

Posted by James Forshaw, Project Zero This blog is a continuation of my series of Windows exploitation tricks. This one describes an exploitation trick I’ve been trying to develop for years, succeeding mostly, more on that later on the latest versions of Windows 10. It’s a trick to trap access to...

Imagemagick Studio ImageMagick::WriteOnePNGImage() Code Issue Vulnerability

Imagemagick Studio ImageMagick is a suite of open source image processing software from ImageMagick Studio Imagemagick Studio, an American company. The software can read, convert or write images in many formats. A code issue vulnerability exists in ImageMagick versions 6.9.10-68 through 7.0.8-68,...