Newely discovered AMD CPU flaw highlights the risk of running multiple VMs


A newly discovered vulnerability in AMD chips allows malicious actors to perform remote code execution (RCE) and privilege escalation in virtual machines.

Cybersecurity researchers from the CISPA Helmholtz Center for Information Security in Germany detailed a vulnerability they named StackWarp, a hardware vulnerability in AMD CPUs that breaks the protections of confidential virtual machines, by manipulating how the processor tracks the stack, and letting a malicious insider or hypervisor change program flow or read sensitive data inside a protected VM.

Read more…
Source: Techradar News


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Purple Fox EK Adds Microsoft Exploits to Arsenal

    July 6, 2020

    The Purple Fox exploit kit (EK) has added two new exploits targeting critical- and high-severity Microsoft vulnerabilities to its bag of tricks – and researchers say they expect more attacks to be added in the future. The Purple Fox EK was previously analyzed in September, when researchers said that it appears to have been built to replace the Rig ...

  • Windows 10 background image tool can be abused to download malware

    July 2, 2020

    A binary in Windows 10 responsible for setting an image for the desktop and lock screen can help attackers download malware on a compromised system without raising the alarm. Known as living-off-the-land binaries (LoLBins), these files come with the operating system and have a legitimate purpose. Attackers of all colors are abusing them in post-exploitation phases ...

  • CISA: Nation-State Attackers Likely to Take Aim at Palo Alto Networks Bug

    June 30, 2020

    The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning that foreign hackers are likely to exploit a newly disclosed, critical vulnerability in a raft of Palo Alto Networks firewalls and enterprise VPN appliances, which allows for device takeover without authentication. The Department of Defense (DoD) arm that oversees cyberspace operations has advised all devices affected ...

  • 80,000 printers are exposing their IPP port online

    June 23, 2020

    For years, security researchers have warned that every device left exposed online without being protected by a firewall is an attack surface. Hackers can deploy exploits to forcibly take control over the device, or they can just connect to the exposed port if no authentication is required. Devices hacked this way are often enslaved in malware botnets, ...

  • Ripple20 Vulnerability Mitigation Best Practices

    June 22, 2020

    On June 16th, the Department of Homeland Security and CISA ICS-CERT issued a critical security advisory warning covering multiple newly discovered vulnerabilities affecting Internet-connected devices manufactured by multiple vendors. This set of 19 vulnerabilities in a low-level TCP/IP software library developed by Treck has been dubbed “Ripple20” by researchers from JSOF. A networking stack is a software component that provides ...

  • Australian PM says nation under serious state-run ‘cyber attack’ – Microsoft, Citrix, Telerik UI bugs ‘exploited’

    June 19, 2020

    Australian Prime Minister Scott Morrison has called a snap press conference to reveal that the nation is under cyber-attack by a state-based actor, but the nation’s infosec advice agency says that while the attacker has gained access to some systems it has not conducted “any disruptive or destructive activities within victim environments.” Morrison said the attack ...