2021 - Page 68 of 759

Debian 11 — wpa — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — wpa — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • December 1, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 1 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4445 CVE-2014-3686 CVE-2015-1863 CVE-2015-4141 CVE-2015-4142 CVE-2015-4143 CVE-2015-4144 CVE-2015-4145  +12 more Upstream summary: Heap-based buffer overflow in the eap_server_tls_process_fragment function in eap_server_tls_common.c in the EAP authentication server in hostapd […]

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How to Configure Database Connection Pooling with PgBouncer on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Database Connection Pooling with PgBouncer on RHEL 7

  • December 1, 2021
  • Linux
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How to Configure Database Connection Pooling with PgBouncer on RHEL 7 Every PostgreSQL client connection spawns a backend process on the server, consuming approximately 5–10 MB of RAM for its working memory and adding overhead to the process scheduler. Applications that open hundreds of short-lived connections — such as PHP scripts, Node.js workers, or microservices […]

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Amazon Linux 2 — hiredis — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — hiredis — vulnerability — patch and remediation guide

  • December 1, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2REDIS6-2023-004 Related CVEs: CVE-2021-32765 Upstream summary: Hiredis is a minimalistic C client library for the Redis database. In affected versions Hiredis is vulnurable to integer overflow if provided maliciously crafted […]

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Oracle Linux 8 — Options for configuring disk cache characteristics during VM creation unavailable in web console — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Options for configuring disk cache characteristics during VM creation unavailable in web console

  • November 30, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 30 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30301271 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 […]

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FreeBSD 13 — py39-Elixir — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py39-Elixir — vulnerability — patch and remediation guide

  • November 30, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py39-Elixir — weak use of cryptography Related CVEs: CVE-2012-2146 Upstream summary: Red Hat Security Response Team reports: Elixir 0.8.0 uses Blowfish in CFB mode without constructing a unique initialization vector […]

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Common Problems 118949

Ubuntu 14.04 LTS – DNS resolution fails after network changes

  • November 30, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 30 November 2021 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 […]

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FreeBSD 13 — py27-bleach — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py27-bleach — vulnerability — patch and remediation guide

  • November 30, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-bleach — regular expression denial-of-service Related CVEs: CVE-2020-6817 Upstream summary: Bleach developers reports: bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to […]

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How to Set Up a Certificate Authority on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up a Certificate Authority on SLES 15

Introduction This tutorial covers How to Set Up a Certificate Authority on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: […]

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Common Problems 118574

Ubuntu 16.04 LTS rsyslog stops writing logs after permission regression

  • November 30, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 30 November 2021 Affected versions: 16.04 📖 ~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 […]

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