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USN-8670-3: curl vulnerability
Ubuntu issued USN-8670-3 updating curl for Ubuntu 26.04 LTS to fix a flaw where wrong client certificates could be used on reused connections.
Ubuntu Security Notice USN-8670-3 extends the curl fix from USN-8670-1 to Ubuntu 26.04 LTS. The flaw, discovered by Joshua Rogers, involves incorrect handling of connection reuse when client certificate settings change, potentially causing the wrong client certificate to be presented. The issue can lead to authentication mix-ups rather than remote code execution.
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curl: a CVE dispute
curl maintainer Daniel Stenberg details a dispute over a CVE assigned to the curl project.
Daniel Stenberg, lead maintainer of curl, published a post describing a dispute over a CVE affecting the project. The piece covers the vulnerability disclosure and CVE assignment process rather than a new exploitable flaw. Given curl's ubiquity, the process discussion is relevant to defenders tracking CVE quality, but no immediate risk is described.
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How to correlate Kubernetes audit logs with container runtime data
Elastic Security Labs shows how to join Kubernetes audit logs with Defend for Containers runtime data to investigate service account abuse and container escapes.
Elastic Security Labs demonstrates correlating Kubernetes audit logs with Defend for Containers (D4C) runtime telemetry in Elastic. In an Amazon EKS lab, a compromised workload service account performed discovery, read secrets, minted a token, created a privileged pod, and execed into it to attempt a container escape via nsenter and chroot. The escape wrappers appeared only in the decoded Kubernetes audit requestURI, not in runtime process events. The post covers join fields, prebuilt EQL sequence rules, and continues the control-plane correlation thread from the TeamPCP container attack scenario and the Hugging Face intrusion write-up.
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Week in review: Patched curl and libcurl vulnerability, 15 free M365 security training modules
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