Category Archives: exploit

Is Intel’s Management Engine Broken yet?

Our own [Brian Benchoff] asked this same question just six months ago in a similar headline. At that time, the answer was no. Or kind of no. Some exploits existed but with some preconditions that limited the impact of the bugs found in Intel Management Engine (IME). But 2017 is an unforgiving year for the blue teams, as lot of serious bugs have been found throughout the year in virtually every fields of computing. Researchers from Positive Technologies report that they found a flaw that allows them to execute unsigned code on computers running the IME. The cherry on top …read more

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Posted in exploit, IME, jtag, news, security, security hacks, USB DCI | Leave a comment

Bluetooth Vulnerability Affects All Major OS

Security researchers from Armis Labs recently published a whitepaper unveiling eight critical 0-day Bluetooth-related vulnerabilities, affecting Linux, Windows, Android and iOS operating systems. These vulnerabilities alone or combined can lead to privileged code execution on a target device. The only requirement is: Bluetooth turned on. No user interaction is necessary to successfully exploit the flaws, the attacker does not need to pair with a target device nor the target device must be paired with some other device.

The research paper, dubbed BlueBorne (what’s a vulnerability, or a bunch, without a cool name nowadays?), details each vulnerability and how it was …read more

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Linux SambaCry

Great news everyone, Windows is not the only operating system with remote code execution via SMB. Linux has also its own, seven-year-old version of the bug. /s

This Linux remote execution vulnerability (CVE-2017-7494) affects Samba, the Linux re-implementation of the SMB networking protocol, from versions 3.5.0 onwards (since 2010). The SambaCry moniker was almost unavoidable.

The bug, however, has nothing to do on how Eternalblue works, one of the exploits that the current version of WannaCry ransomware packs with. While Eternalblue is essentially a buffer overflow exploit, CVE-2017-7494 takes advantage of an arbitrary shared library load.  To exploit it, a …read more

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ASLR^CACHE Attack Defeats Address Space Layout Randomization

Researchers from VUSec found a way to break ASLR via an MMU sidechannel attack that even works in JavaScript. Does this matter? Yes, it matters. A lot. The discovery of this security flaw along with the practical implementation is really important mainly because of two factors: what it means for ASLR to be broken and how the MMU sidechannel attack works inside the processor.

Address Space Layout Randomization or ASLR is an important defense mechanism that can mitigate known and, most importantly, unknown security flaws. ASLR makes it harder for a malicious program to compromise a system by, as the …read more

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Posted in AnC, ASLR, ASLR^CACHE, exploit, MMU, news, security hacks, sidechannel | Leave a comment