Package Management

FreeBSD 12 — ja-xlockmore — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ja-xlockmore — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xlockmore — local exploit Related CVEs: CVE-2012-4524 Upstream summary: Ignatios Souvatzis of NetBSD reports: Due to an error in the dclock screensaver in xlockmore, users who explicitly use this screensaver […]

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openSUSE Tumbleweed — libxapian30 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libxapian30 — vulnerability — 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-2018-0499 Upstream summary: A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). Table of contents […]

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How to Set Up HAProxy Load Balancer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up HAProxy Load Balancer on Debian 9

Introduction How to Set Up HAProxy Load Balancer on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 […]

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FreeBSD 12 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: yamt — buffer overflow and directory traversal issues Related CVEs: CVE-2004-1302 CVE-2005-1846 CVE-2005-1847 Upstream summary: Stanislav Brabec discovered errors in yamt's path name handling that lead to buffer overflows and […]

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FreeBSD 12 — apache13-modperl — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — apache13-modperl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: apache — heap overflow in mod_proxy Related CVEs: CVE-2004-0492 Upstream summary: A buffer overflow exists in mod_proxy which may allow an attacker to launch local DoS attacks and possibly execute […]

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How to Set the Hostname and FQDN on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set the Hostname and FQDN on Debian 10

Introduction Deploying set the hostname and fqdn on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure […]

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Ubuntu 18.04 — velocity — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — velocity — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6281-1 Related CVEs: CVE-2020-13936 Upstream summary: Alvaro Munoz discovered that Velocity Engine incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]

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SLES 12 — libdlm — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libdlm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 February 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:1791-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-12779 Upstream summary: libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and […]

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openSUSE Tumbleweed — ldns — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ldns — 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 advisory openSUSE-SU-2020:0438-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-1000231 CVE-2020-19860 CVE-2020-19861 CVE-2011-3581 Upstream summary: A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors. Table of contents Symptom & […]

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Common Problems 121110

Debian 10 – Conflicting Time Services Cause Unstable Sync – Single Authority Model

🟡 Medium   ⏱ 5–30 min  Last verified: 16 February 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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