Security Hardening

Debian 13 — ruby-extlib — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ruby-extlib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1802 Upstream summary: The extlib gem 0.9.15 and earlier for Ruby does not properly restrict casts of string values, which might allow remote attackers to conduct object-injection attacks […]

Read more
Alpine Linux 3.20 — perl-app-cpanminus — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — perl-app-cpanminus — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.7045-r0 📖 ~4 min read  •  Source: Alpine secdb entry — perl-app-cpanminus 1.7045-r0 Related CVEs: CVE-2020-16154 Upstream summary: Alpine community repository for vv3.20 ships perl-app-cpanminus 1.7045-r0 which addresses CVE-2020-16154. Table of contents Symptom & Impact Environment […]

Read more
Debian 11 — libjson-xs-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libjson-xs-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-40928 Upstream summary: JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact […]

Read more
Common Problems 119630

Debian 13 TLS Certificate Errors During apt Update

🟡 Medium   ⏱ 5–30 min  Last verified: 3 October 2025 📖 ~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 […]

Read more
Debian 13 — liquidsoap — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — liquidsoap — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4965 Upstream summary: liguidsoap.py in liguidsoap 0.3.8.1+2 allows local users to overwrite arbitrary files via a symlink attack on (1) /tmp/liguidsoap.liq, (2) /tmp/lig.#####.log, and (3) /tmp/emission.ogg temporary files. […]

Read more
How to Install Flux CD on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Flux CD on Debian 13

Introduction How to Install Flux CD on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This […]

Read more
Alpine Linux 3.20 — guix — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — guix — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.4.0-r5 📖 ~4 min read  •  Source: Alpine secdb entry — guix 1.4.0-r5 Related CVEs: CVE-2024-27297 Upstream summary: Alpine community repository for vv3.20 ships guix 1.4.0-r5 which addresses CVE-2024-27297. Table of contents Symptom & Impact Environment […]

Read more
Debian 13 — mpmath — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — mpmath — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-29063 Upstream summary: A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Mpmath v1.0.0 through v1.2.1 when the mpmathify function is called. Table of contents Symptom & […]

Read more
Debian 13 — apr — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — apr — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2412 CVE-2011-0419 CVE-2011-1928 CVE-2012-0840 CVE-2017-12613 CVE-2021-35940 CVE-2022-24963 CVE-2023-49582 Upstream summary: Multiple integer overflows in the Apache Portable Runtime (APR) library and the Apache Portable Utility library (aka APR-util) […]

Read more
Windows Server 2019 — KB5066874 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5066874 — 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 KB5066874 • MSRC update-guide entry Related CVEs: CVE-2016-9535 CVE-2025-24990 CVE-2025-24052 CVE-2025-55335 CVE-2025-55700 CVE-2025-55701 CVE-2025-58717 CVE-2025-58735  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: tif_predict.h and tif_predict.c in libtiff […]

Read more
CHAT