Operations

Debian 11 — libxrender — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxrender — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1987 CVE-2016-7949 CVE-2016-7950 Upstream summary: Multiple integer overflows in X.org libXrender 0.9.7 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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Debian 11 — ardour — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ardour — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-4974 CVE-2010-3349 CVE-2020-22617 Upstream summary: Heap-based buffer overflow in the flac_buffer_copy function in libsndfile 1.0.17 and earlier might allow remote attackers to execute arbitrary code via a FLAC […]

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How to Configure IIS WebSockets on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure IIS WebSockets on Windows Server 2022

How to Deploy ASP.NET Applications on Windows Server 2022 Windows Server 2022 with IIS is the standard hosting platform for both classic ASP.NET (Framework) applications and modern ASP.NET Core applications. The deployment process, application pool configuration, and hosting model differ significantly between the two. This guide covers both paths in detail — from deploying a […]

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Debian 11 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1349 CVE-2009-0796 CVE-2011-2767 Upstream summary: PerlRun.pm in Apache mod_perl before 1.30, and RegistryCooker.pm in mod_perl 2.x, does not properly escape PATH_INFO before use in a regular expression, which […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2022-5778)

🟠 High   ⏱ 15–60 min  Last verified: 11 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5778 Related CVEs: CVE-2022-36318 CVE-2022-36319 CVE-2022-2505 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Configure IPv6 Dual-Stack Networking on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure IPv6 Dual-Stack Networking on RHEL 8

IPv6 adoption has accelerated as IPv4 address exhaustion becomes more acute, and most modern Linux servers must support both protocols simultaneously in a dual-stack configuration. RHEL 8 ships with full IPv6 support in the kernel and in NetworkManager, making dual-stack setup straightforward with nmcli. Firewalld and the major web servers handle IPv6 natively once the […]

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Common Problems 117033

Ubuntu 22.04 LTS – swap does not activate after reboot – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 January 2023 Affected versions: Ubuntu 22.04 LTS 📖 ~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 Errors […]

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Common Problems 114619

High CPU Usage by systemd-journald on Busy Hosts

🟡 Medium   ⏱ 5–30 min  Last verified: 10 January 2023 📖 ~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 Errors & Cross-Refs References & Further […]

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FreeBSD 12 — element-web — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — element-web — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 January 2023 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: element-web — several vulnerabilities Related CVEs: CVE-2021-40823 CVE-2021-40824 CVE-2022-36059 CVE-2022-36060 CVE-2022-39236 CVE-2022-39249 CVE-2022-39250 CVE-2022-39251  +8 more Upstream summary: Element team reports: Versions of Element Web and Desktop earlier than 1.11.85 […]

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