Tag jailbreak

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 27, 2018

Samsung Galaxy S9 and S9+ devices, maybe others, are texting camera photos to random contacts through the Samsung Messages app without user permission.

Gentoo Linux distribution GitHub repository was compromised. Attacker removed out all the maintainers, who realized the intrusion only 10 minutes after he gained access. He add rm -rf /* to build scripts, changed README and some minor things.

Since January 2017, Stylish browser extension has been augmented with spyware that records every single website that its 2 million other users visit, then sends complete browsing activity back to its servers, together with a unique identifier.

Digicert Withdraws from the CA Security Council (CASC), because they "feel that CASC is not sufficiently transparent and does not represent the diversity of the modern Certificate Authority (CA) industry. Improving the ecosystem requires broad participation from all interested stakeholders, and many are being excluded unnecessarily."
Great step Digicert!

CryptoCurrency Clipboard Hijacker malware discovered by Bleeping Computer monitors for more than 2.3 million Bitcoin addresses, then replace them in memory, with the attacker address.

Local root jailbreak, authorization bypass & privilege escalation vulnerabilities in all ADB broadband routers, gateways and modems. The patch is already available.

A Microsoft Security division published an analysis of the malware sample which exploited the Adobe Reader software and the Windows operating system using two zero-day exploits in a single PDF file.

Blog about why it is not helpful to use the Canvas Defender extension, a browser canvas fingerprinting countermeasure.

Blog about the cryptographic primitives used by the North Korean Red Star operating system. The OS is mostly uses AES-256 Rijndael with dynamic S-Box modifications, but the design is evolving and the latest version of the algorithm has more differences.

Interesting technique how to bypass web-application firewalls by abusing SSL/TLS. An attacker can use an unsupported SSL cipher to initialize the connection to the webserver which supports that cipher, but the WAF would not be able to identify the attack because it can't view the data.

Good introduction to the Linux ELF file format with some practical examples how sections look like, how to shrink the size during compilation and more.