Information Security Report – February 2018


Over the past month, we have seen a number of threats, vulnerabilities, and spear phishing attacks affecting organisations worldwide. Read on for a summary of these events to help you assess their implication on your environment.

Current Threats and Exploits


  • Refined Exploits Targeting Legacy Windows Servers and PCs: – The vulnerabilities discovered in SMBv1 servers (CVE-2017-0146 and CVE-2017-0143), can be used by remote attackers to execute arbitrary code via crafted packets, to the Microsoft SMB servers. Three exploits linked to these Microsoft vulnerabilities, have been rewritten and stabilised and can now impact all Windows operating systems starting with Windows 2000 up to and including Server 2016 edition. It is highly recommended to apply all software patches available as it is reported that these exploits are being used by worm malware to enable them to spread. Additional details on the recommended actions to take against these exploits can be found in the references below. (1)
  • WannaMine: Cryptocurrency Mining Malware: An EternalBlue based malware dubbed WannaMine was discovered to be using computing resources to mine cryptocurrency on infected systems. The malware initially uses password harvesting kit Mimikatz to steal usernames and passwords from system memory and EternalBlue exploits in order to spread around the network. (2)(3)
  • CISCO ASA Remote code execution and Denial of Service vulnerability:  A vulnerability in the Cisco SSL VPN functionality of Cisco ASA was discovered and is being actively scanned and attacked across the internet. Successful attacks allow the attacker to reload the device resulting in a denial of service, or run arbitrary code on the device by sending crafted XML packets to the webVPN interface. Users of Cisco ASA devices are recommended to check the running operating system version and upgrade soon as possible.(4)
  • Cisco IOS and IOS XE Software EnergyWise Denial of Service Vulnerabilities:  Multiple vulnerabilities in the EnergyWise module of Cisco IOS and Cisco IOS XE Software have been disclosed. These are caused by the improper parsing of crafted EnergyWise packets destined to an affected device. These vulnerabilities could allow an unauthenticated, remote attacker to cause a buffer overflow condition or a reload of an affected device, leading to a denial of service (DoS) condition. Cisco has released software updates that address these vulnerabilities. (5)
  • Lenovo Networking OS backdoor: A backdoor that has existed since 2004 has been removed from the Lenovo Networking OS in use by 16 IBM and 16 Lenovo network switches. This backdoor allows for administrative access to the device and Lenovo claim the backdoor was placed into the product by the now-defunct Nortel Networks. (6)
  • CISCO ASA 9000 IPv6 Fragmentation Packet Denial of Service:  Due to an incorrect handling of IPv6 packets in the Cisco ASA 9000 series, an unauthenticated reload of trident line cards is possible in routers running Cisco IOS XR Software Release 5.3.4. with IPv6 configured. Cisco have released software updates that resolve this issue. (7)(8)

Recent Breaches


  • Russian hackers hacked and published 2018 Winter Olympics emails: It is reported that Russian hackers calling themselves ‘FancyBear’ have retaliated to the banning of Russia from participating in the Winter Olympics by releasing emails regarding Olympic games scheduled in February in South Korea. It is alleged that the group is associated with military intelligence. The International Olympic Committee have not commented on the allegations brought forward by the leaked documents. (9)

Other News


  • Netflix phishing campaign: A phishing campaign was reported to hijack the Netfilix brand by tricking users to handing over their login details, credit card, mugshot, and their ID. The fraudsters used a fake website that had a valid HTTPS certificate to attempt to reassure users of the legitimacy of the website. (10)

References