hw: Information disclosure issue in Intel SGX via RAPL interface

A vulnerability was found in Intel's implementation of RAPL Running Average Power Limit. An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem...

hw: Information disclosure issue in Intel SGX via RAPL interface

A vulnerability was found in Intel's implementation of RAPL Running Average Power Limit. An attacker with a local account could query the power management functionality to intelligently infer SGX enclave computation values by measuring power usage in the RAPL subsystem...

Mbed TLS -- Local side channel attack on RSA and static Diffie-Hellman

Manuel Pégourié-Gonnard reports: An attacker with access to precise enough timing and memory access information typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world can recover the private keys used in RSA or static finite-field Diffie-Hellm...

A week in security (August 3 – 9)

Last week on Malwarebytes Labs, on our Lock and Code podcast, we talked about identity and access management technology. We also wrote about business email compromises to score big, discussed how the Data Accountability and Transparency Act of 2020 looks beyond consent, and we analyzed how the...

PT-2021-6718

Name of the Vulnerable Software and Affected Versions Arm Mbed TLS versions prior to 2.23.0 Description The issue is related to a side channel in modular exponentiation, which could disclose an RSA private key used in a secure enclave. This is due to a dependency of the instruction timing on the...

Mbed TLS -- Side channel attack on ECDSA

Manuel Pégourié-Gonnard reports: An attacker with access to precise enough timing and memory access information typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world can fully recover an ECDSA private key after observing a number of signature...

New 'CacheOut' Attack Leaks Data from Intel CPUs, VMs and SGX Enclave

Another month, another speculative execution vulnerability found in Intel processors. If your computer is running any modern Intel CPU built before October 2018, it's likely vulnerable to a newly discovered hardware issue that could allow attackers to leak sensitive data from the OS kernel,...

PT-2020-1361 · Intel +7 · Intel Processors +7

Name of the Vulnerable Software and Affected Versions: IntelR Processors affected versions not specified Description: The issue is related to cleanup errors in some data cache evictions for some IntelR Processors, which may allow an authenticated user to potentially enable information disclosure...

New Unpatchable iPhone Exploit Allows Jailbreaking

A new iOS exploit allows jailbreaking of pretty much all version of the iPhone. This is a huge deal for Apple, but at least it doesn't allow someone to remotely hack people's phones. Some details: I wanted to learn how Checkm8 will shape the iPhone experience­ -- particularly as it relates to...

Attacking the Intel Secure Enclave

Interesting paper by Michael Schwarz, Samuel Weiser, Daniel Gruss. The upshot is that both Intel and AMD have assumed that trusted enclaves will run only trustworthy code. Of course, that's not true. And there are no security mechanisms that can deal with malicious enclaves, because the designers...

Intel SGX SDK Double Release Vulnerability

Intel SGX SDK is a set of software development kits based on SGX Intel Software Security Extensions technology from the U.S. company Intel Intel. A double release vulnerability exists in Intel SGX SDK. An attacker could exploit this vulnerability to disclose information...

Apple's New MacBook Disconnects Microphone "Physically" When Lid is Closed

Apple introduces a new privacy feature for all new MacBooks that "at some extent" will prevent hackers and malicious applications from eavesdropping on your conversations. Apple's custom T2 security chip in the latest MacBooks includes a new hardware feature that physically disconnects the...

Signal Testing New Private Contact Discovery Service

Open Whisper Systems, the company behind the encrypted messaging app Signal, is testing a new private contact discovery service that in theory will allow the app to determine if a user has Signal contacts in their address book but forbid its servers from accessing the users’ address book. Moxie...

It's Not Exactly Open Season on the iOS Secure Enclave

The black box that is Apple’s iOS Secure Enclave may have been pried open, but that doesn’t necessarily mean it’s open season on iPhones and iPads worldwide. Yesterday’s public disclosure of the decryption key for the Secure Enclave Processor firmware does indeed allow white and black hats to pok...

Hacker Publishes iOS Secure Enclave Firmware Decryption Key

A hacker Thursday afternoon published what he says is the decryption key for Apple iOS’ Secure Enclave Processor SEP firmware. The hacker, identified only as xerub, told Threatpost that the key unlocks only the SEP firmware, and that this would not impact user data. “Everybody can look and poke a...

iOS 9.3.4 Patches Critical Code Execution Flaw

Apple last week patched a critical iOS memory corruption vulnerability that could allow attackers to execute code on compromised devices. The flaw was found by Team Pangu, a Chinese hacker group that specializes in building iOS jailbreak tools. The vulnerability is fixed in iOS 9.3.4. “An...

Hack Apple & Get Paid up to $200,000 Bug Bounty Reward

So finally, Apple will pay you for your efforts of finding bugs in its products. While major technology companies, including Microsoft, Facebook and Google, have launched bug bounty programs over last few years to reward researchers and hackers who report vulnerabilities in their products, Apple...

Apple Launches Bug Bounty with Maximum $200,000 Reward

LAS VEGAS—Apple closed out Black Hat today with a long-awaited announcement that next month it will launch a bug bounty. The Apple Security Bounty will be an invitation-only program, open to two dozen researchers at the outset, said Ivan Krstic, head of security engineering and architecture. The...

Apple Must Threat Model Against Itself

Apple, like most advanced tech companies, understands threats and how to close them off. But one salient point that’s emerged from its ongoing dispute with the FBI over unlocking the San Bernardino shooter’s phone is that Apple is a threat to itself. Therefore, it should be no surprise that Apple...