Security Hardening

Oracle Linux 8 — Image Builder security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Image Builder security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-2780)

  • June 27, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2780 Related CVEs: CVE-2022-2879 CVE-2022-27664 CVE-2022-2880 CVE-2022-41715 CVE-2022-41717 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Install Docker Compose on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Docker Compose on FreeBSD 13

  • June 27, 2021
  • FreeBSD
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Introduction This guide explains how to Install Docker Compose 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 privilege […]

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

openSUSE Tumbleweed — wicked — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • June 27, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0165-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-18902 CVE-2019-18903 CVE-2020-7216 CVE-2020-7217 Upstream summary: A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE […]

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FreeBSD 13 — py23-django-devel — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py23-django-devel — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • June 27, 2021
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: django — multiple vulnerabilities Related CVEs: CVE-2008-2302 CVE-2009-3695 CVE-2010-3082 Upstream summary: The Django project reports: Please reference CVE/URL list for details Table of contents Symptom & Impact Environment & Reproduction […]

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

openSUSE Tumbleweed — oddjob — vulnerability — patch and remediation guide

  • June 27, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-10737 Upstream summary: A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during […]

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FreeBSD 13 — pam_ldap — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pam_ldap — vulnerability — patch and remediation guide

  • June 27, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pam_ldap — authentication bypass vulnerability Related CVEs: CVE-2005-2641 Upstream summary: Luke Howard reports: If a pam_ldap client authenticates against an LDAP server that returns a passwordPolicyResponse control, but omits the […]

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Ubuntu 20.04 — aptdaemon — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — aptdaemon — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • June 27, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4664-1 Related CVEs: CVE-2020-16128 CVE-2020-27349 CVE-2020-15703 Upstream summary: Kevin Backhouse discovered that Aptdaemon incorrectly handled certain properties. A local attacker could use this issue to test for the presence of […]

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Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide (ELSA-2021-9077)

  • June 27, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 27 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9077 Related CVEs: CVE-2021-20233 CVE-2021-20225 CVE-2020-27749 CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — libsndfile — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libsndfile — vulnerability — patch and remediation guide (ELSA-2022-1968)

  • June 27, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 27 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1968 Related CVEs: CVE-2021-4156 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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FreeBSD 13 — ntp-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ntp-devel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • June 27, 2021
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 27 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ntp — Multiple vulnerabilities Related CVEs: CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 CVE-2014-9296 CVE-2015-1798 CVE-2015-1799 CVE-2015-5300 CVE-2015-7691  +12 more Upstream summary: nwtime.org reports: Three ntp vulnerabilities, Depending on configuration, may have little impact […]

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