Network Security


NEWS 
  • Millions of Routers Exposed to RCE by USB Kernel Bug

    January 11, 2022

    Millions of popular end-user routers are at risk of remote code execution (RCE) due to a high-severity flaw in the KCodes NetUSB kernel module. The module enables remote devices to connect to routers over IP and access any USB devices (such as printers, speakers, webcams, flash drives and other peripherals) that are plugged into them. This ...

  • Make sure you’re up-to-date with Sonicwall SMA 100 VPN box patches – security hole exploit info is now out

    January 11, 2022

    Technical details and exploitation notes have been published for a remote-code-execution vulnerability in Sonicwall SMA 100 series VPN appliances. The information was released today by infosec outfit Rapid7. This comes about a month after Sonicwall issued a patch for the security hole, which was discovered and privately disclosed by Rapid7’s Jake Baines to Sonicwall in October. If ...

  • Hundreds of thousands of MikroTik devices still vulnerable to botnets

    December 9, 2021

    Approximately 300,000 MikroTik routers are vulnerable to critical vulnerabilities that malware botnets can exploit for cryptomining and DDoS attacks. MikroTik is a Latvian manufacturer of routers and wireless ISPs who has sold over 2,000,000 devices globally. In August, the Mēris botnet exploited vulnerabilities in MikroTik routers to create an army of devices that performed a record-breaking DDoS ...

  • Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products

    December 8, 2021

    On September 16, 2021, the Apache Software Foundation disclosed five vulnerabilities affecting the Apache HTTP Server (httpd) 2.4.48 and earlier releases. For a description of these vulnerabilities, see the Apache HTTP Server 2.4.49 section of the Apache HTTP Server 2.4 vulnerabilities webpage. This advisory will be updated as additional information becomes available. Read more… Source: CISCO  

  • SonicWall ‘strongly urges’ customers to patch critical SMA 100 bugs

    December 8, 2021

    SonicWall ‘strongly urges’ organizations using SMA 100 series appliances to immediately patch them against multiple security flaws rated with CVSS scores ranging from medium to critical. The bugs (reported by Rapid7’s Jake Baines and NCC Group’s Richard Warren) impact SMA 200, 210, 400, 410, and 500v appliances even when the web application firewall (WAF) is enabled. The ...

  • Tor blocked in Russia

    December 8, 2021

    The Tor browser, which allows users to surf the internet anonymously and access prohibited webpages, has been blocked across much of Russia, according to recent reports from an internet-monitoring group. The Open Observatory of Network Interference, or OONI, reported last week that Tor’s system of proxy servers in Russia had partly stopped working at around 5:21pm ...

  • Play Your Cards Right: Detecting Wildcard DNS Abuse

    December 1, 2021

    The domain name system (DNS) maps names to addresses so that computers can communicate. The directions within the DNS exist largely in records where a specific name (such as paloaltonetworks.com) is mapped to pieces of data, such as IP addresses (for example, 34.107.151202). As the name suggests, wildcard DNS records are an exception to this ...

  • Web trust dies in darkness: Hidden Certificate Authorities undermine public crypto infrastructure

    November 19, 2021

    Security researchers have checked the web’s public key infrastructure and have measured a long-known but little-analyzed security threat: hidden root Certificate Authorities. Certificate Authorities, or CAs, vouch for the digital certificates we use to establish trust online. You can be reasonably confident that your bank website is actually your bank website when it presents your browser ...

  • FBI: An APT Group Exploiting a 0-day in FatPipe WARP, MPVPN, and IPVPN Software

    November 17, 2021

    As of November 2021, FBI forensic analysis indicated exploitation of a 0-day vulnerability in the FatPipe MPVPN® device software1 going back to at least May 2021. The vulnerability allowed APT actors to gain access to an unrestricted file upload function to drop a webshell for exploitation activity with root access, leading to elevated privileges and ...

  • Security company faces backlash for waiting 12 months to disclose Palo Alto 0-day

    November 12, 2021

    There has been considerable debate within the cybersecurity community about Randori, a security firm that waited one year before disclosing a critical buffer overflow bug it discovered in Palo Alto Networks’ GlobalProtect VPN. The zero-day — which has a severity rating of 9.8 and was first reported by ZDNet — allows for unauthenticated, remote code execution ...

  • A Peek into Top-Level Domains and Cybercrime

    November 11, 2021

    Top-level domains (TLDs), such as .com, .net, .xxx and .hu, sit at the highest level of the domain name system (DNS) naming hierarchy. When users want to acquire domain names (e.g., paloaltonetworks.com), typically, they need to register them under a TLD directly or one level lower (e.g., google.co.uk). Properties and policies of TLDs such as ...

  • Massive Zero-Day Hole Found in Palo Alto Security Appliances

    November 10, 2021

    UPDATE: Researchers have a working exploit for the vulnerability (now patched), which allows for unauthenticated RCE and affects what Palo Alto clarified is an estimated 10,000 VPN/firewalls. Researchers have developed a working exploit to gain remote code execution (RCE) via a massive vulnerability in a security appliance from Palo Alto Networks (PAN), potentially leaving 10,000 vulnerable ...

  • Critical Citrix DDoS Bug Shuts Down Network, Cloud App Access

    November 10, 2021

    A critical security bug in the Citrix Application Delivery Controller (ADC) and Citrix Gateway could allow cyberattackers to crash entire corporate networks without needing to authenticate. The two affected Citrix products (formerly the NetScaler ADC and Gateway) are used for application-aware traffic management and secure remote access, respectively. The federated working specialist pushed out a security ...

  • Cloudflare report highlights devastating DDoS attacks on VoIP services and several ‘record-setting HTTP attacks’

    November 5, 2021

    Cloudflare released its Q3 DDoS Attack Trends report this week, capping a record-setting quarter that saw a number of devastating attacks on VoIP services. Cloudflare researchers said they saw the several “record-setting HTTP DDoS attacks, terabit-strong network-layer attacks and one of the largest botnets ever deployed (Meris),” noting the emergence of ransom DDoS attacks on voice ...

  • Cring ransomware continues assault on industrial organizations with aging applications, VPNs

    November 1, 2021

    The Cring ransomware group continues to make a name for itself through attacks on aging ColdFusion servers and VPNs after emerging earlier this year. Experts like Digital Shadows Sean Nikkel told ZDNet that what makes Cring interesting is that so far, they appear to specialize in using older vulnerabilities in their attacks. “In a previous incident, Cring ...

  • Network Scanning Traffic Observed in Public Clouds

    October 28, 2021

    Tracking network scanning activities can help researchers understand which services are being targeted. By monitoring the origins of the scanners, researchers can also identify compromised endpoints. If a host belonging to a known organization suddenly starts to scan a part of the internet, it is a strong indicator that the host is compromised. This blog summarizes ...

  • Lyceum group reborn

    October 18, 2021

    This year, Kaspersky researchers presented their research into the Lyceum group (also known as Hexane), which was first exposed by Secureworks in 2019. In 2021, we have been able to identify a new cluster of the group’s activity, focused on two entities in Tunisia. According to older public accounts of the group’s activity, Lyceum conducted targeted ...

  • Security Risks with Private 5G in Manufacturing Companies Part. 2

    October 15, 2021

    The steel industry is a prime area for installing Private 5G Private 5G is said to bring about the “democratization of communications.” This technology allows private companies and local governments to take the driving seat in operating the latest information communication systems. However, not all organizations have the knowledge and ability to deal with telecom technology, ...

  • Apache Web Server Zero-Day Exposes Sensitive Data

    October 5, 2021

    Apache Software has quickly issued a fix for a zero-day security bug in the Apache HTTP Server, which was first reported to the project last week. The vulnerability is under active exploitation in the wild, it said, and could allow attackers to access sensitive information. According to a security advisory issued on Monday, the issue (CVE-2021-41773) ...

  • Facebook Blames Outage on Faulty Router Configuration

    October 5, 2021

    As of Monday night, Facebook had crawled back from what may have been its longest blackout ever and apologized for the mass outage that left billions of users locked out of Facebook, Instagram, WhatsApp, Messenger and Oculus VR for about six hours. In a Monday night blog post, Santosh Janardhan Facebook’s vice president of infrastructure gave ...