August 2021 - Page 8 of 69

Oracle Linux 8 — nodejs:16 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — nodejs:16 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-5171)

  • August 28, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-5171 Related CVEs: CVE-2020-7788 CVE-2021-22959 CVE-2020-28469 CVE-2021-3807 CVE-2021-22960 CVE-2021-33502 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Amazon Linux 2 — kernel-livepatch-4.14.252-195.483 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.252-195.483 — vulnerability — patch and remediation guide

  • August 28, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2021-069 Related CVEs: CVE-2021-4002 Upstream summary: No CVE associated with this advisory Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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How to Install Graylog on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Graylog on FreeBSD 12

  • August 28, 2021
  • FreeBSD
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Introduction How to Install Graylog on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, and […]

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openSUSE Tumbleweed — libxls-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libxls-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • August 28, 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-2022:0142-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-27836 CVE-2020-27819 Upstream summary: An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, […]

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Alpine Linux edge — spice — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — spice — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • August 28, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.15.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — spice 0.15.0-r0 Related CVEs: CVE-2020-14355 CVE-2021-20201 CVE-2019-3813 CVE-2018-10873 CVE-2017-7506 CVE-2016-9577 CVE-2016-9578 Upstream summary: Alpine main repository for vedge ships spice 0.15.0-r0 which addresses CVE-2020-14355. Table […]

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FreeBSD 13 — pear-Horde_Core — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pear-Horde_Core — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • August 28, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: horde — XSS vulnerabilities Related CVEs: CVE-2015-8807 CVE-2016-2228 Upstream summary: The Horde Team reports: Fixed XSS vulnerabilities in menu bar and form renderer. Table of contents Symptom & Impact Environment […]

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Common Problems 118423

Ubuntu 16.04 LTS – DNS resolution intermittently fails on servers – Fix & Prevention

  • August 28, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 16.04 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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FreeBSD 13 — postfix — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — postfix — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • August 28, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Postfix — memory corruption vulnerability Related CVEs: CVE-2011-0411 CVE-2011-1720 Upstream summary: The Postfix SMTP server has a memory corruption error, when the Cyrus SASL library is used with authentication mechanisms […]

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Debian 11 — python-babel — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-babel — vulnerability — patch and remediation guide

  • August 28, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-42771 Upstream summary: Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution. Table […]

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Debian 11 — libgda5 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libgda5 — vulnerability — patch and remediation guide

  • August 28, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-39359 Upstream summary: In GNOME libgda through 6.0.0, gda-web-provider.c does not enable TLS certificate verification on the SoupSessionSync objects it creates, leaving users vulnerable to network MITM attacks. […]

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AIX AlmaLinux Alpine Linux authentication authorization Backup Recovery Boot Startup Cloud Integration Common Problems Cpu Memory Database Debian Debian 11 Debian 12 Bookworm Debian 13 Trixie DNS Firewall Fix Prevention FreeBSD FreeBSD 12 FreeBSD 13 FreeBSD 14 FreeBSD 15 Kernel Drivers Logging Monitoring Lvm Raid NetBSD Networking openSUSE Operations Oracle Linux Oracle Linux 8 Oracle Linux 9 Package Management Performance Proxy Security Hardening SLES Storage Disk Systemd Services Tls Ssl Troubleshooting ubuntu VPN windows server

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