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Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-4292)

  • July 16, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 16 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4292 Related CVEs: CVE-2021-33620 CVE-2021-28662 CVE-2021-31807 CVE-2021-28651 CVE-2021-31808 CVE-2021-28652 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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AlmaLinux 8 — gtkmm24 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — gtkmm24 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

  • July 16, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1586 Related CVEs: CVE-2019-13012 CVE-2020-13543 CVE-2020-13584 CVE-2020-16125 CVE-2020-9948 CVE-2020-9951 CVE-2020-9983 CVE-2021-1817  +4 more Upstream summary: GNOME is the default desktop environment of AlmaLinux. The following packages have been upgraded to a later […]

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Common Problems 121618

Package Install Held Back by Broken Dependencies

🟠 High   ⏱ 5–30 min  Last verified: 16 July 2021 Affected versions: Debian 9 📖 ~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 Detect Rootkits with rkhunter on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter on FreeBSD 13

  • July 16, 2021
  • FreeBSD
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Introduction This guide explains how to Detect Rootkits with rkhunter on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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FreeBSD 13 — linux-c7-libssh — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — linux-c7-libssh — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • July 16, 2021
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 16 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libssh2 — multiple issues Related CVEs: CVE-2019-3855 CVE-2019-3856 CVE-2019-3857 CVE-2019-3858 CVE-2019-3859 CVE-2019-3860 CVE-2019-3861 CVE-2019-3862  +1 more Upstream summary: libssh2 developers report: Defend against possible integer overflows in comp_method_zlib_decomp. Defend against […]

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Common Problems 118622

cloud-init Stuck or Fails on First Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 16 July 2021 📖 ~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 13 — zh-chitex — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — zh-chitex — security advisory — patch and remediation guide

  • July 16, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 16 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ChiTeX/ChiLaTeX unsafe set-user-id root Upstream summary: Niels Heinen reports that ChiTeX installs set-user-id root executables that invoked system(3) without setting up the environment, trivially allowing local root compromise. Table of […]

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Gentoo Linux — net-irc/inspircd — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-irc/inspircd — vulnerability — patch and remediation guide

  • July 16, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-22 Related CVEs: CVE-2021-33586 Upstream summary: InspIRCd incorrectly handled malformed PONG messages, resulting in access of freed memory. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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How to Tune AIX for Oracle Database Performance on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Tune AIX for Oracle Database Performance on IBM AIX 7.1

  • July 16, 2021
  • IBM AIX
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Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to tune aix for oracle database performance on ibm aix […]

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Debian 10 — teeworlds — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — teeworlds — vulnerability — patch and remediation guide

  • July 16, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 16 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12066 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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