Security Hardening

Alpine Linux 3.20 — freeswitch — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — freeswitch — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.10.7-r0 📖 ~4 min read  •  Source: Alpine secdb entry — freeswitch 1.10.7-r0 Related CVEs: CVE-2021-37624 CVE-2021-41105 CVE-2021-41145 CVE-2021-41157 CVE-2021-41158 CVE-2023-51443 Upstream summary: Alpine main repository for vv3.20 ships freeswitch 1.10.7-r0 which addresses CVE-2021-37624. Table of […]

Read more
Ubuntu 22.04 — python-ldap — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-ldap — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 November 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7828-1 Related CVEs: CVE-2025-61912 CVE-2025-61911 CVE-2021-46823 Upstream summary: It was discovered that Python LDAP incorrectly handled special characters in the special character filtering function. A remote attacker could possibly use […]

Read more
How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 9

Apache’s mod_proxy module turns Apache into a powerful reverse proxy and gateway, forwarding requests to backend application servers, other web servers, or balancer clusters. Unlike Nginx’s reverse proxy (which is native), Apache’s proxy functionality is modular: mod_proxy handles the core proxying, mod_proxy_http handles HTTP/1.1, mod_proxy_balancer provides load balancing, and mod_proxy_wstunnel handles WebSocket tunnelling. On RHEL […]

Read more
How to Install MongoDB on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Install MongoDB on SLES 16

Introduction This tutorial covers How to Install MongoDB on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh && […]

Read more
SLES 16 — libwmf — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libwmf — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2006:019 (see also SUSE bugzilla) Related CVEs: CVE-2006-3376 CVE-2015-0848 CVE-2015-4588 CVE-2015-4695 CVE-2015-4696 Upstream summary: Integer overflow in player.c in libwmf 0.2.8.4, as used in multiple products including (1) wv, (2) abiword, (3) […]

Read more
SLES 16 — python313-ldap — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — python313-ldap — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-RU-2025:4454-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-61911 CVE-2025-61912 Upstream summary: python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, the sanitization method `ldap.filter.escape_filter_chars` […]

Read more
Windows Server 2019 — KB5050061 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5050061 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5050061 • MSRC update-guide entry Related CVEs: CVE-2025-21294 CVE-2025-21298 CVE-2025-21307 CVE-2025-21411 CVE-2025-21413 CVE-2025-21210 CVE-2025-21214 CVE-2025-21215  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

Read more
Common Problems 113974

RHEL 10 – SELinux Denies Custom Application Port Access – Label and Policy Fix

🟠 High   ⏱ 5–30 min  Last verified: 7 November 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related […]

Read more
How to Configure MySQL Replication on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure MySQL Replication on SLES 16

Introduction This tutorial covers How to Configure MySQL Replication on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

Read more
NetBSD 9.4 — powerdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — powerdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2012-1193 CVE-2020-10995 CVE-2020-12244 CVE-2020-14196 CVE-2022-27227 CVE-2023-22617 CVE-2025-30195 CVE-2025-30192  +12 more Upstream summary: pkgsrc audit-packages flagged powerdns-recursor<3.1.7.2 for vulnerability class 'arbitrary-code-execution'. Reference: http://doc.powerdns.com/powerdns-advisory-2010-01.html Table of contents Symptom & Impact Environment […]

Read more
CHAT