Advisories & Alerts

  • [SingCERT] Alert on Drupal Critical Vulnerability (CVE-2018-7600) 03 April 2018

    Drupal is a content management software that is used by numerous companies around the world to create content and host websites. There are over one million sites using Drupal including popular websites such as NBC, Fox, The Economist, Twitter, and Pinterest.

    On 28 March 2018, Drupal announced a highly critical vulnerability CVE-2018-7600 in their system that leads to remote code execution. This vulnerability potentially allows attackers to exploit multiple attack vectors, which could result in the site being completely compromised.

  • [SingCERT] Alert on security flaws in Advanced Micro Devices (AMD) processors 22 March 2018

    On 13 March 2018, security researchers from CTS Labs announced the discovery of several security flaws affecting some Advanced Micro Devices (AMD) products that could allow an attacker under the right conditions take complete control over AMD processors that reside in computers and other devices.

    On 21 March 2018, AMD acknowledged these security flaws and updated its technical assessment of the issues. They are working on the appropriate mitigation actions and plan to release firmware patches in the coming weeks. AMD also clarified that these flaws are not related to the AMD “Zen” CPU architecture or the Google Project Zero exploits made known in January 2018. Instead, these issues were found within the firmware managing the embedded security control processor in some AMD products, such as the AMD Secure Processor, and the chipset used in some socket AM4 and socket TR4 desktop platforms supporting AMD processors.

  • [SingCERT] Technical Alert on the Distributed Denial of Service (DDoS) Amplification Attacks Using Memcached 13 March 2018

    Memcached is a free and open source distributed memory object caching system. It is often used to speed up dynamic websites by caching data object in random-access memory, reducing high latency when accessing external database.

    On 27 February 2018, Cloudflare reported a significant rise in number and magnitude of distributed denial of service (DDoS) amplification attacks due to the abuse of misconfigured Memcached servers.

  • [SingCERT] Alert on Firefox Browser Critical Vulnerability (CVE-2018-5124) 02 February 2018

    On 29 January 2018, Mozilla Foundation announced a critical vulnerability (CVE-2018-5124) found in its Firefox browser.

  • [SingCERT] Advisory on Critical Security Bug in Oracle's MICROS POS System 02 February 2018

    On 30 January 2018, security researchers from ERPScan disclosed a critical security flaw (CVE-2018-2636) in Oracle's MICROS Point-of-Sale (POS) system. As a provider of POS system, Oracle’s MICROS software is used in more than 330,000 cash registers globally, including food and beverage outlets and hotels.

    CVE-2018-2636 is a security flaw that allows attackers to read sensitive data such as usernames and password hashes from configuration files in the POS terminals. Using the retrieved data, attackers can perform a brute-force attack to gain full and legitimate access to the POS server's database containing vendors' business data, which can include their customers’ credit card details. Attackers can also use the stolen usernames and passwords for corporate espionage and proxy endpoints for future cyber-attacks.

  • [SingCERT] Alert on Cisco Adaptive Security Appliance (ASA) Critical Vulnerability (CVE-2018-0101) 01 February 2018

    On 29 January 2018, Cisco announced a critical vulnerability (CVE-2018-0101) found on its Adaptive Security Appliance (ASA) software with a maximum Common Vulnerability Score System (CVSS) severity base score of 10 out of 10. The vulnerability is found in the Secure Sockets Layer (SSL) VPN functionality of the ASA and is due to an attempt to double free a region of memory when the webvpn feature is enabled on the Cisco ASA device. An attacker could exploit this vulnerability by sending multiple, crafted XML packets to a webvpn-configured interface on the affected system, resulting in unauthenticated remote access.

  • [SingCERT] Alert on WordPress Websites Infected with Browser-based Digital Currency Mining and Keylogger Malware 31 January 2018

    On 29 January 2018, security researchers from Sucuri discovered a malicious campaign that targets WordPress websites by infecting them with a browser-based digital currency mining tool and keylogger malware. A digital currency mining tool runs on the computer system on the internet, utilising computational power of the hardware Central Processing Unit (CPU) and Graphics Processing Unit (GPU) while keylogger, a type of surveillance technology used to monitor and record each keystroke typed on a specific computer’s keyboard, is commonly used by cyber criminals to capture users’ information such as login passwords or banking credentials.

  • [SingCERT] Technical Advisory on Electron Framework Critical Protocol Handler Vulnerability 26 January 2018

    The Electron framework is a popular and widely used development cross-platform for creating desktop applications such as Skype, Slack, Signal, Shopify, Discord, Github, WordPress and Twitch.

    On 22nd January 2018, Electron disclosed the critical vulnerability CVE-2018-1000006 present in the Electron framework which could possibly cause all Windows applications developed using that platform to be vulnerable to Remote Code Execution (RCE).

  • [SingCERT] Alert on Intel Active Management Technology (AMT) Issue 13 January 2018

    On 12 January 2018, security firm F-Secure reported an insecure default behaviour within Intel Active Management Technology (AMT) that could allow an attacker to bypass login processes and take control of a user's computer.

  • [SingCERT] Advisory on Important Microsoft vulnerabilities affecting Office, .NET Framework and ASP.NET Core 12 January 2018

    On 9 January 2018, Microsoft announced the release of several security patches to fix vulnerabilities affecting Microsoft Office, the .NET Framework, and ASP.NET Core, amongst others.