Systemd Services

Debian 11 — apscheduler — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — apscheduler — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-31072 Upstream summary: The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function […]

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Debian 13 — libio-socket-ssl-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libio-socket-ssl-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3024 CVE-2010-4334 Upstream summary: The verify_hostname_of_cert function in the certificate checking feature in IO-Socket-SSL (IO::Socket::SSL) 1.14 through 1.25 only matches the prefix of a hostname when no wildcard […]

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Common Problems 116075

Ubuntu 26.04 LTS – PostgreSQL service fails after major package upgrade – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 28 July 2026 Affected versions: Ubuntu 26.04 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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openSUSE Tumbleweed — perl-Net-CIDR-Lite — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl-Net-CIDR-Lite — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-45190 CVE-2026-45191 CVE-2026-40198 CVE-2026-40199 Upstream summary: Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow […]

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Debian 13 — libzypp — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libzypp — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-7435 CVE-2017-7436 CVE-2017-9269 CVE-2017-9271 CVE-2018-7685 CVE-2019-18900 Upstream summary: In libzypp before 20170803 it was possible to add unsigned YUM repositories without warning to the user that could lead […]

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Debian 12 — haveged — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — haveged — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-41054 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Configure Logstash on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure Logstash on FreeBSD 15

Introduction Deploying configure logstash on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports approach so […]

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Debian 13 — reprepro — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — reprepro — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-4739 Upstream summary: reprepro 1.3.0 through 2.2.3 does not properly verify signatures when updating repositories, which allows remote attackers to construct and distribute an ostensibly valid Release.gpg file […]

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Debian 13 — django-filter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — django-filter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15225 Upstream summary: django-filter is a generic system for filtering Django QuerySets based on user selections. In django-filter before version 2.4.0, automatically generated `NumberFilter` instances, whose value was later […]

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Debian 13 — groovy — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — groovy — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-3253 CVE-2016-6814 CVE-2020-17521 Upstream summary: The MethodClosure class in runtime/MethodClosure.java in Apache Groovy 1.7.0 through 2.4.3 allows remote attackers to execute arbitrary code or cause a denial of […]

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