Troubleshooting

Common Problems 121135

Debian 10 NTP Sync Not Active and Clock Drift Increases

🟡 Medium   ⏱ 5–30 min  Last verified: 1 May 2020 Affected versions: Debian 10 📖 ~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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How to Configure pf Packet Filtering on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure pf Packet Filtering on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure pf packet filtering on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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FreeBSD 12 — squidGuard — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — squidGuard — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: squidGuard — multiple vulnerabilities Related CVEs: CVE-2009-3700 CVE-2009-3826 Upstream summary: SquidGuard website reports: Patch 20091015 fixes one buffer overflow problem in sgLog.c when overlong URLs are requested. SquidGuard will then […]

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openSUSE Tumbleweed — python36-python-cjson — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-python-cjson — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2010-1666 Upstream summary: Buffer overflow in Dan Pascu python-cjson 1.0.5, when UCS-4 encoding is enabled, allows context-dependent attackers to cause a denial of service (application crash) or possibly have […]

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FreeBSD 12 — php5-dba — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php5-dba — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — ini database truncation inside dba_replace() function Related CVEs: CVE-2008-7068 Upstream summary: securityfocus research reports: A bug that leads to the emptying of the INI file contents if the […]

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FreeBSD 12 — py-subversion — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py-subversion — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: subversion — heap overflow vulnerability Related CVEs: CVE-2009-2411 Upstream summary: A Subversion Security Advisory reports: Subversion clients and servers have multiple heap overflow issues in the parsing of binary deltas. […]

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Alpine Linux edge — zeromq — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — zeromq — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 4.3.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — zeromq 4.3.3-r0 Related CVEs: CVE-2020-15166 CVE-2019-13132 CVE-2019-6250 Upstream summary: Alpine main repository for vedge ships zeromq 4.3.3-r0 which addresses CVE-2020-15166. Table of contents Symptom & […]

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FreeBSD 12 — MT — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — MT — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MT — Search Unspecified XSS Related CVEs: CVE-2006-5080 Upstream summary: Secunia reports: Arai has reported a vulnerability in Movable Type and Movable Type Enterprise, which can be exploited by malicious […]

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How to Set Up LVM Logical Volume Management on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up LVM Logical Volume Management on Debian 10

Introduction This guide explains how to Set Up LVM Logical Volume Management on Debian 10 on Debian 10 Buster. Debian Buster uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 10 install […]

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Ubuntu 18.04 — libapache-session-ldap-perl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libapache-session-ldap-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 May 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6596-1 Related CVEs: CVE-2020-36658 Upstream summary: It was discovered that Apache::Session::LDAP incorrectly handled invalid X.509 certificates. If a user or an automated system were tricked into opening a specially crafted […]

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