Tag DDoS

InfoSec Week 7, 2019

Ubiquiti network devices are being remotely exploited, via port 10001 discovery service. Results in loss of device management, also being used as a weak UDP DDoS amplification attack: 56 bytes in, 206 bytes out.

Researchers demonstrated that Intel SGX trusted enclave poses a security thread, when they implemented proof malware that bypasses antivirus protection by leveraging SGX properties. Find more information in the research paper named "Practical Enclave Malware with Intel SGX".

Looks like the diffusion layer of Russian symmetric ciphers Kuznyechik and hash function Streebog, have mathematical properties required for the backdoor. There is no theoretical attack yet, and I am not convinced that it is on purpose, but the construction is suspicious.

Google engineers have designed a new encryption mode for ChaCha stream cipher called Adiantum. The new encryption mode should be used on cheap ARM processors that does not have hardware support for AES, and it is almost 5x faster than AES-256-XTS.

Current versions of Ubuntu Linux were found to be vulnerable to local privilege escalation due to a bug in the snapd API.

Phones running Android OS can be compromised remotely by viewing malicious PNG image.

A new vulnerability in the runc, container runtime used by Docker, Kubernetes and others. allows container escape just by running a malicious image.

NCC Group published an interesting blog about a downgrade attack on TLS 1.3 and multiple other vulnerabilities in major TLS Libraries which they found last year.

Researcher Scott Gayou published a step by step guide on how to jailbreak Subaru Crosstrek 2018 head unit leveraging USB port and update mechanism.

According to the Airbnb presentation, 38 percent of bugs at Airbnb could have been prevented by using types.

You can try to find bugs in the Swiss eVoting System, as they opened a bug bounty program. There is also a source code available for registered bug hunters.

Google open sourced ClusterFuzz, an infrastructure used for fuzzing Chrome and OSS-Fuzz, continuous fuzzing pipeline of open source software.

InfoSec Week 9, 2018

Wandera security researchers spotted a new sophisticated Android RedDrop malware hidden in at least 53 Android applications. It can intercept SMS, record audio and exfiltrate data to the remote server.

There is an experimental support for forward secure post-quantum Extended Hash-Based Signatures (XMSS) in the OpenSSH protocol.

Blog by Matthew Green on the probable encryption key handling by Apple in the China mandated cloud. Not really satisfied explanation, only guesses, as Apple is silent about the exact key handling methodology.

Cloudflare detected new Memcached based amplification DDoS attack vector. The attacker just implants a large payload on an exposed memcached server, then, the attacker spoofs the "get" request message with target Source IP address. The memcached server could be really huge - around 1MB.

A group of computer scientists from the US and China published a paper proposing the first-ever trojan for a neural network. It's called PoTrojan and is triggered by special network input. After that, the network start to work differently.

The Cisco Talos team analyzed attribution claims around Olympic Destroyer malware. The result is to not imply blindly to Russia. Attribution is hard.

New KeePassXC version 2.3.0 was released. There are lots of new features, like new Argon2 key derivation function, SSH agent integration, browser plugin.

Trustico SSL certificate reseller revoked 23000 customer certificates by sending private keys(?!) over email to the Digicert certification authority.

There are rumors that major U.S. government contractor Cellebrite is able to unlock all current iPhone models.

An advertising network has been using a well-known malware trick, a Domain Generation Algorithm (DGA), to bypass ad blockers and deploy in-browser cryptocurrency miners since December 2017.

A novel technique is using hardware branch predictor side channel attack to bypass ASLR protection:
"Jump Over ASLR: Attacking Branch Predictors to Bypass ASLR"

InfoSec Week 39, 2017

Security researcher Gal Beniamini from Google has discovered a security vulnerability (CVE-2017-11120) in Apple's iPhone and other devices that use Broadcom Wi-Fi chips and published working exploit after notifying affected parties.

Google engineers also found multiple flaws and vulnerabilities in the popular DNS software package - Dnsmasq. The patches are now committed to the project’s git repository. Make sure to upgrade to v2.78.

Arbor Networks researchers attributed Flusihoc DDoS botnet to the Chinese origins. More than 154 different command and control servers were used during the years, with over 48 still active right now.

HP Enterprise shared ArcSight source code with the Russians.

The vulnerability in Siemens industrial switches allows an unauthenticated attacker who has access to the network to remotely perform administrative actions.

Computer manufacturer company Purism is currently running crowdfunding campaign to finance Librem 5 – A Security and Privacy Focused Phone.
From the campaign webpage:
"Librem 5, the phone that focuses on security by design and privacy protection by default. Running Free/Libre and Open Source software and a GNU+Linux Operating System designed to create an open development utopia, rather than the walled gardens from all other phone providers."
Support them!

Microsoft announced new cloud-based memory corruption bug detector with the codename Project Springfield.

Super-Stealthy Droppers - Linux "Diskless" binary execution by example.