August 2019

Arch Linux — freeradius — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — freeradius — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • August 31, 2019
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201707-23 Related CVEs: CVE-2017-10987 CVE-2017-10986 CVE-2017-10985 CVE-2017-10984 CVE-2017-10983 CVE-2017-10978 CVE-2017-9148 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 3.0.14-4. Fixed in: 3.0.15-1. Group: AVG-357. Table of contents Symptom & Impact […]

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Common Problems 118402

Ubuntu 16.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

  • August 31, 2019
  • 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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Common Problems 118034

Ubuntu 18.04 failed to fetch updates from repositories

  • August 31, 2019
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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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Common Problems 117505

Time Drift in VM Despite NTP Enabled

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: 20.04 📖 ~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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How to Configure LDAP Security on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure LDAP Security on Windows Server 2019

Introduction to LDAP Security LDAP (Lightweight Directory Access Protocol) is the protocol that applications use to query and modify Active Directory. By default, Windows Server 2019 domain controllers accept LDAP connections on port 389 without requiring signing or channel binding, making them vulnerable to man-in-the-middle attacks where an attacker can intercept and relay LDAP authentication. […]

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Common Problems 114046

RHEL 10 NFS Mount Hangs During Boot

  • August 31, 2019
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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FreeBSD 12 — go-devel — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — go-devel — vulnerability — patch and remediation guide

  • August 31, 2019
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: go — invalid headers are normalized, allowing request smuggling Related CVEs: CVE-2019-16276 Upstream summary: The Go project reports: net/http (through net/textproto) used to accept and normalize invalid HTTP/1.1 headers with […]

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Java Queue – Queue in Java — step-by-step Programming tutorial on Progressive Robot

Java Queue – Queue in Java

URL: https://www.progressiverobot.com/java-queue/ Java Queue is an interface available in java.util package and extends java.util.Collection interface. Just like Java List, Java Queue is a collection of ordered elements (Or objects) but it performs insert and remove operations differently. We can use Queue to store elements before processing those elements. ![](images/java-queue-section-1.png) Java Queue In this section, we […]

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FreeBSD 12 — php5-imap — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php5-imap — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • August 31, 2019
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php-imap — Denial of Service Related CVEs: CVE-2007-0905 CVE-2007-0906 CVE-2007-0907 CVE-2007-0908 CVE-2007-0909 CVE-2007-0910 CVE-2007-0988 CVE-2007-1001  +1 more Upstream summary: The following DoS condition in IMAP extension was fixed in PHP […]

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