Hiding Payloads in Linux Extended File Attributes

Xavier today looked at ways to hide payloads on Linux, similar to how alternate data streams are used on Windows. Turns out that extended file attributes do the trick, and he presents some scripts to either hide data or find hidden data.

https://isc.sans.edu/diary/Hiding%20Payloads%20in%20Linux%20Extended%20File%20Attributes/32116

Cisco Patches Critical Identity Services Engine Flaw CVE-2025-20281, CVE-2025-20337, CVE-2025-20282

An unauthenticated user may execute arbitrary code as root across the network due to improperly validated data in Cisco s Identity Services Engine.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6

Oracle Critical Patch Update

Oracle patched 309 flaws across 111 products. 9 of these vulnerabilities have a critical CVSS score of 9.0 or higher.

https://www.oracle.com/security-alerts/cpujul2025.html

Broadcom releases VMware Updates

Broadcom fixed a number of vulnerabilities for ESXi, Workstation, Fusion, and Tools.

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/35877