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Vulnerability Analysis

In-depth guides and analysis on vulnerability analysis from the Safeguard engineering team.

577 articles

Vulnerability Analysis

Kubernetes API server privilege escalation via aggregated API (CVE-2018-1002105)

A critical flaw in Kubernetes' aggregated API let unauthenticated users gain full admin privileges. Here's how it worked and how to fix it.

Jan 9, 20267 min read
Vulnerability Analysis

Red Hat JBoss Vulnerability Exploitation: The Persistent Threat of Java Middleware

JBoss application servers have been a recurring target for attackers. From deserialization flaws to exposed management interfaces, the middleware layer remains a critical attack surface.

Jan 9, 20266 min read
Vulnerability Analysis

runc container escape via file descriptor overwrite (CVE-2019-5736)

CVE-2019-5736 let malicious containers overwrite the host runc binary and gain root — here's the mechanism, affected versions, and how to remediate it.

Jan 9, 20267 min read
Vulnerability Analysis

Linux cgroups release_agent container escape (CVE-2022-0492)

CVE-2022-0492 lets containers with CAP_SYS_ADMIN escape via cgroup v1's release_agent. Impact, timeline, and concrete remediation steps inside.

Jan 9, 20267 min read
Vulnerability Analysis

containerd-shim abstract Unix socket container escape (CVE-2020-15257)

CVE-2020-15257 let containers sharing a host network namespace abuse containerd-shim's abstract socket API. Here's the impact, fix, and remediation path.

Jan 9, 20267 min read
Vulnerability Analysis

Windows MSHTML Spoofing CVE-2024-43573 Explained

CVE-2024-43573 is a zero-day MSHTML spoofing flaw patched by Microsoft in October 2024. Here is the chain, detection, and why MSHTML keeps biting.

Jan 9, 20267 min read
Vulnerability Analysis

Zyxel Firewall CVE-2022-30525: Unauthenticated Command Injection in Your Perimeter Defense

CVE-2022-30525 gave attackers unauthenticated OS command injection on Zyxel firewalls. The irony of a firewall being the weakest point in your network security.

Jan 8, 20266 min read
Vulnerability Analysis

Kubernetes validating admission webhook bypass (CVE-2021-25735)

CVE-2021-25735 let attackers bypass Kubernetes validating admission webhooks on Node objects via a kube-apiserver flaw. Here's the fix and detection path.

Jan 8, 20267 min read
Vulnerability Analysis

Kubernetes kubelet symlink volume mount escape (CVE-2021-25741)

CVE-2021-25741 lets attackers escape subPath volume mounts in Kubernetes kubelet via a symlink race, exposing host files and enabling privilege escalation.

Jan 8, 20267 min read
Vulnerability Analysis

containerd CRI plugin mount escape (CVE-2022-23648)

CVE-2022-23648 let crafted pod volume specs bypass containerd's CRI mount isolation to reach arbitrary host files — versions, severity, and fixes.

Jan 8, 20266 min read
Vulnerability Analysis

Linux AF_PACKET privilege escalation (CVE-2020-14386)

CVE-2020-14386 lets a local attacker with CAP_NET_RAW corrupt Linux kernel heap memory via AF_PACKET and escalate privileges. Here's the fix and impact.

Jan 8, 20268 min read
Vulnerability Analysis

VMware Workspace ONE CVE-2022-22954: Server-Side Template Injection Goes Enterprise

CVE-2022-22954 in VMware Workspace ONE Access allowed unauthenticated RCE via server-side template injection. Attackers used it to deploy cryptominers and backdoors.

Jan 7, 20266 min read

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Vulnerability Analysis (Page 45) — Supply Chain Security Blog | Safeguard