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:
- Actively Exploited Windows Kernel EoP Bug Allows Takeover
February 9, 2021
Microsoft has addressed nine critical-severity cybersecurity bugs in February’s Patch Tuesday updates, plus an important-rated vulnerability that is being actively exploited in the wild. Six of the security holes – including one of the critical bugs – were already publicly disclosed. Overall, the computing giant has released patches for 56 CVEs covering Microsoft Windows components, the .NET ...
- Fortinet fixes critical vulnerabilities in SSL VPN and web firewall
February 7, 2021
Fortinet has fixed multiple severe vulnerabilities impacting its products. The vulnerabilities range from Remote Code Execution (RCE) to SQL Injection, to Denial of Service (DoS) and impact the FortiProxy SSL VPN and FortiWeb Web Application Firewall (WAF) products. Multiple advisories published by FortiGuard Labs this month and in January 2021 mention various critical vulnerabilities that Fortinet has ...
- Signal ignores proxy censorship vulnerability, bans researchers
February 7, 2021
Signal, an end-to-end encrypted messaging platform was recently blocked by the Iranian government. To help its users bypass censorship in Iran, the company suggested a TLS proxy workaround. However, multiple researchers have now discovered flaws in the workaround that can let a censor or government authority probe into Signal TLS proxies, rendering these protections moot and potentially ...
- Cisco warns of critical remote code execution flaws in its small business VPN routers
February 5, 2021
Cisco is warning customers using its small business routers to upgrade the firmware to fix flaws that could give remote attackers root level access to the devices. The critical flaws affect the Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers. These were the models Cisco recommended customers using unsupported small business routers to ...
- Hacking group also used an IE zero-day against security researchers
February 4, 2021
An Internet Explorer zero-day vulnerability has been discovered used in recent North Korean attacks against security and vulnerability researchers. Last month, Google disclosed that the North Korean state-sponsored hacking group known as Lazarus was conducting social engineering attacks against security researchers. To perform their attacks, the threat actors created elaborate online ‘security researcher’ personas that would then ...
- Google patches an actively exploited Chrome zero-day
February 4, 2021
Google has released today version 88.0.4324.150 of the Chrome browser for Windows, Mac, and Linux. Today’s release contains only one bugfix for a zero-day vulnerability that was exploited in the wild. The zero-day, which was assigned the identifier of CVE-2021-21148, was described as a “heap overflow” memory corruption bug in the V8 JavaScript engine. Google said the ...