Tag Cloudflare

InfoSec Week 14, 2018

There is a critical flaw in Microsoft Malware Protection Engine (CVE-2018-0986). They have used the open source unrar code, changed all the signed ints, breaking the code. Remote SYSTEM memory corruption.
https://bugs.chromium.org/p/project-zero/issues/detail?id=1543&desc=2

Blog by Latacora about the right choices and parameters when dealing with cryptography for backups, communication, authentication, etc. Nice summary, with the explanation and historical references.
http://latacora.singles/2018/04/03/cryptographic-right-answers.html

An Italian football club Lazio has been scammed by a social engineering attack via email. The club sent out transfer bill of €2 million to a fraudster’s bank account instead of the Feyenoord Dutch club.
https://www.hackread.com/phishing-scam-italian-football-club-scammed/

The people behind the Google Wycheproof project, which is testing crypto libraries against known attacks released test vectors for many crypto primitives.
https://github.com/google/wycheproof/tree/master/testvectors

Cloudflare announced consumer DNS service sitting on a 1.1.1.1 address. Supports DNS-over-TLS, also DNS-over-HTTPS.
https://blog.cloudflare.com/announcing-1111/

Good explanatory blog about the oblivious DNS and why DNS should not require our trust at all.
https://freedom-to-tinker.com/2018/04/02/a-privacy-preserving-approach-to-dns/

There is a local privilege escalation vulnerability (CVE-2018-0492) in the Debian beep package. Yes, beep package for motherboard beeping. Escalation, because setuid + race condition.
https://mta.openssl.org/pipermail/openssl-announce/2018-March/000119.html

LibreSSL 2.7.0 was accepting all invalid host names as correct. A vulnerability was found by Python maintainer Christian Heimes when running tests after porting new LibreSSL to the Python 3.7. Nobody affected.
https://mail.python.org/pipermail/python-dev/2018-April/152624.html

VirusTotal launches a new Android Sandbox system VirusTotal Droidy to help security researchers detect malicious apps based on behavioral analysis.
http://blog.virustotal.com/2018/04/meet-virustotal-droidy-our-new-android.html

MesaLink is a new memory-safe and OpenSSL-compatible TLS library written in Rust.
https://github.com/mesalock-linux/mesalink

InfoSec Week 13, 2018

The city of Atlanta government has become the victim of a ransomware attack. The ransomware message demanding a payment of $6,800 to unlock each computer or $51,000 to provide all the keys for affected systems. Employees were told to turn off their computers.
https://arstechnica.com/information-technology/2018/03/atlanta-city-government-systems-down-due-to-ransomware-attack/

The academic researchers have discovered a new side-channel attack method called BranchScope that can be launched against devices with Intel processors and demonstrated it against an SGX enclave. The patches released in response to the Spectre and Meltdown vulnerabilities might not prevent these types of attacks.
http://www.cs.ucr.edu/~nael/pubs/asplos18.pdf

Good insight into the ransomware business and how it operates, how it transfers Bitcoin funds, with data gathered over a period of two years.
The paper is named "Tracking Ransomware End-to-end"
https://www.elie.net/static/files/tracking-ransomware-end-to-end/tracking-ransomware-end-to-end.pdf

Mozilla has created a Facebook Container extension for Firefox, which should enable users to protect their online habits by sandboxing Facebook webpage.
https://blog.mozilla.org/firefox/facebook-container-extension/

Interesting article about the North Korean army of hackers operating abroad with the mission to earn money by any means necessary.
https://www.bloomberg.com/news/features/2018-02-07/inside-kim-jong-un-s-hacker-army

Unified logs in the MacOS High Sierra (up to 10.13.3) show the plain text password for APFS encrypted external volumes via disk utility application.
https://www.mac4n6.com/blog/2018/3/21/uh-oh-unified-logs-in-high-sierra-1013-show-plaintext-password-for-apfs-encrypted-external-volumes-via-disk-utilityapp

SophosLabs researchers analyzed a new Android malware which is pretending to he a legitimate QR reader application, but actually is monetizing users by showing them a flood of full-screen advertisements. More than 500k apps were installed.
https://nakedsecurity.sophos.com/2018/03/23/crooks-infiltrate-google-play-with-malware-lurking-in-qr-reading-utilities/

Brian Krebs analyzed the social network behind the recently famous Coinhive javascript cryptocurrency mining business.
https://krebsonsecurity.com/2018/03/who-and-what-is-coinhive/

CloudFlare published a Merkle Town dashboard, Certificate Transparency logs visualization tool.
https://blog.cloudflare.com/a-tour-through-merkle-town-cloudflares-ct-ecosystem-dashboard/

Facebook is tracking users' phone call information via their Android Messenger application.
https://twitter.com/i/web/status/977325434030428160

There are multiple critical vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software.
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-lldp

New version (4.0) of the most secure operating system on the planet - Qubes OS was released.
https://www.qubes-os.org/news/2018/03/28/qubes-40/

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.
https://www.wandera.com/blog/reddrop-malware/

There is an experimental support for forward secure post-quantum Extended Hash-Based Signatures (XMSS) in the OpenSSH protocol.
https://marc.info/?l=openbsd-cvs&m=151940152732492&w=2

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.
https://blog.cryptographyengineering.com/2018/01/16/icloud-in-china/

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.
https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/

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.
https://www.outerplaces.com/science/item/17872-neural-networks-ai-trojan-AMPED

The Cisco Talos team analyzed attribution claims around Olympic Destroyer malware. The result is to not imply blindly to Russia. Attribution is hard.
http://blog.talosintelligence.com/2018/02/who-wasnt-responsible-for-olympic.html

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.
https://keepassxc.org/blog/2018-02-28-2.3-released/

Trustico SSL certificate reseller revoked 23000 customer certificates by sending private keys(?!) over email to the Digicert certification authority.
http://blog.koehntopp.info/index.php/3075-how-not-to-run-a-ca/

There are rumors that major U.S. government contractor Cellebrite is able to unlock all current iPhone models.
https://www.forbes.com/sites/thomasbrewster/2018/02/26/government-can-access-any-apple-iphone-cellebrite/

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.
https://www.bleepingcomputer.com/news/security/ad-network-uses-dga-algorithm-to-bypass-ad-blockers-and-deploy-in-browser-miners/

A novel technique is using hardware branch predictor side channel attack to bypass ASLR protection:
"Jump Over ASLR: Attacking Branch Predictors to Bypass ASLR"
http://www.cs.ucr.edu/~nael/pubs/micro16.pdf

InfoSec Week 4, 2018

Electron applications designed to run on Windows that register themselves as the default handler for a protocol, like Skype, Slack and others, are vulnerable to the remote code execution vulnerability.
https://electronjs.org/blog/protocol-handler-fix

Dutch intelligence service AIVD provided the FBI with important information regarding Russian interference with the American elections. They have following the Cozy Bear APT for years.
https://www.volkskrant.nl/media/dutch-agencies-provide-crucial-intel-about-russia-s-interference-in-us-elections~a4561913/

Good blog about the exploitation of the Intel Management Engine 11 vulnerabilities. Researchers Mark Ermolov and Maxim Goryachy were able to debug and analyse most of the Intel ME processes.
http://blog.ptsecurity.com/2018/01/running-unsigned-code-in-intel-me.html

It's possible to bypass the Cloudflare protection by scanning internet for misconfigured customers' servers.
https://blog.christophetd.fr/bypassing-cloudflare-using-internet-wide-scan-data/

It is possible for an unauthenticated attacker in the LAN network to achieve remote code execution (CVE-2018-5999) in the AsusWRT router as the root user.
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/asuswrt-lan-rce.txt

The Tinder dating application is not using encryption when accessing data on a backend server. Your naked photos could be seen by a waitress in a restaurant. The geeky one.
https://www.checkmarx.com/2018/01/23/tinder-someone-may-watching-swipe-2/

Oracle has released patches for ten vulnerabilities in VirtualBox, which allows guest to host virtual machine escape.
https://www.techrepublic.com/article/10-new-vm-escape-vulnerabilities-discovered-in-virtualbox/

The guy was able to obtain TLS certificates from the Let's Encrypt certification authority for domains that he does not own, due to the TLS-SNI-01 challenge workflow in a cloud environment. Shared hosting providers like Heroku, AWS CloudFront affected.
https://labs.detectify.com/2018/01/12/how-i-exploited-acme-tls-sni-01-issuing-lets-encrypt-ssl-certs-for-any-domain-using-shared-hosting/

Blog by Joanna Rutkowska on a future Qubes Air operating system architecture roadmap. They want to provide compartmentalized secure Qubes OS as a service.
https://www.qubes-os.org/news/2018/01/22/qubes-air/

There is a cryptographic analysis of the WireGuard protocol. WireGuard is a layer 3 replacement for the IPsec, OpenVPN solutions. Interesting project.
https://eprint.iacr.org/2018/080

Nice introduction on how to fuzz TCP servers by Robert Swiecki.
http://blog.swiecki.net/2018/01/fuzzing-tcp-servers.html

InfoSec Week 34 - 35, 2017

Autodesk A360 cloud-based online storage misused as a delivery platform for multiple malware families.
http://blog.trendmicro.com/trendlabs-security-intelligence/a360-drive-adwind-remcos-netwire-rats/

Brian Krebs has done a good open source intel work on a shadowy past of Marcus Hutchins, author of the popular cybersecurity blog MalwareTech.
https://krebsonsecurity.com/2017/09/who-is-marcus-hutchins/

Wikileaks has published documents about the CIA Angelfire - "persistent framework that can load and execute custom implants on target computers running the Microsoft Windows operating system (XP or Win7)"
https://wikileaks.org/vault7/#Angelfire

ESET has published a research paper about a Gazer, stealth cyberespionage trojan, attributed to the notoriously known Turla group. The group was spreading malware using watering hole and spearphishing campaigns. I cannot find any more direct attribution except the fact that it is targeting "embassies and consulates" which, I believe, are a very common target for every intelligence actor...
https://www.welivesecurity.com/wp-content/uploads/2017/08/eset-gazer.pdf

Zimperium Researcher Adam Donenfeld published a proof-of-concept for iOS Kernel Exploit.
https://github.com/doadam/ziVA

Very good analysis of a group chat vulnerabilities in a popular IM applications:
"Insecurities of WhatsApp's, Signal's, and Threema's Group Chats"
https://web-in-security.blogspot.ch/2017/07/insecurities-of-whatsapps-signals-and.html

Cloudflare's blog post about a quantum resistant supersingular isogeny Diffie-Hellman key agreement used in TLS 1.3.
https://blog.cloudflare.com/sidh-go/

A Phrack-style paper on research into abusing Windows token privileges for escalation of privilege. Deep down the rabbit hole.
https://github.com/hatRiot/token-priv/blob/master/abusing_token_eop_1.0.txt

Security researchers at Positive Technologies have discovered an undocumented configuration setting that disables the Intel Management Engine.
http://securityaffairs.co/wordpress/62470/hacking/intel-management-engine-kill-switch.html

InfoSec Week 8, 2017

Malware samples recovered from watering hole attacks against the Polish financial regulator's website contain false flags that fraudulently suggest Russian actors are behind the campaign. BAE Systems Threat Research attributed the attack to the notoriously known Lazarus Group.
https://baesystemsai.blogspot.ch/2017/02/lazarus-false-flag-malware.html

TeamSpy malware targets high-profile industrial executives, researchers and diplomats using phishing attack. If successful, the malware installs keylogger and hidden TeamViewer application.
https://heimdalsecurity.com/blog/security-alert-teamspy-turn-teamviewer-into-spying-tool/

The world's largest spam botnet Necurs, with 5 million infected hosts, has added a DDoS module.
http://blog.anubisnetworks.com/blog/necurs-proxy-module-with-ddos-features

Montenegro suffered massive cyberattacks against government and media websites.
http://www.balkaninsight.com/en/article/montenegro-govt-on-alert-over-new-cyber-attacks-02-21-2017

This one about Cloudflare bug is all over the internet, but I found the report from the Google Project Zero engineer interesting.
https://bugs.chromium.org/p/project-zero/issues/detail?id=1139 https://medium.com/@octal/cloudbleed-how-to-deal-with-it-150e907fd165

Google announces first SHA1 collision attack, demonstrating it with two PDF files.
https://shattered.io/

Short blog with the self explanatory headline "Why it sucks to be a Security Researcher" written by a Sakurity infosec guy.
https://medium.com/@homakov/why-it-sucks-to-be-a-security-researcher-8a1d17fbffe8

Crackle is a tool to crack Bluetooth Smart Encryption (BLE). It exploits a flaw in the pairing mechanism that leaves all communications vulnerable to decryption by passive eavesdroppers.
https://github.com/mikeryan/crackle http://www.darknet.org.uk/2017/02/crackle-crack-bluetooth-smart-encryption-ble/

The Mercure is a tool for generating and managing phishing campaigns. It includes email templates, attachments and landing page management.
https://github.com/synhack/mercure/