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

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

🟠 High   ⏱ 15–60 min  Last verified: 6 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3602 CVE-2009-4008 CVE-2010-0969 CVE-2011-1922 CVE-2011-4528 CVE-2011-4869 CVE-2014-8602 CVE-2017-15105  +12 more Upstream summary: Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to […]

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Common Problems 120478

Debian 11 – apt update shows NO_PUBKEY and rejects repository signatures

🟠 High   ⏱ 5–30 min  Last verified: 6 April 2022 Affected versions: Debian 11 📖 ~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 Configure USB Device Restriction via Group Policy on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure USB Device Restriction via Group Policy on Windows Server 2012 R2

How to Configure USB Device Restriction via Group Policy on Windows Server 2012 R2 Removable storage devices represent a significant data exfiltration and malware introduction risk in any organization. USB flash drives, portable hard drives, and other removable media can bypass network-level security controls entirely. Windows Server 2012 R2 provides multiple mechanisms to restrict removable […]

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IBM AIX 7.3 — CVE-2021-20448 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-20448 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 5 April 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-20448, IBM Support Bulletin CVE: CVE-2021-20448 NVD summary: IBM Content Navigator 3.0.CD is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering […]

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Oracle Linux 8 — libjpeg-turbo — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libjpeg-turbo — security and stability fixes — required update (ELSA-2021-4288)

🟡 Medium   ⏱ 10–30 min  Last verified: 5 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4288 Related CVEs: CVE-2020-17541 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 — libevent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — libevent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libevent — multiple vulnerabilities Related CVEs: CVE-2014-6272 CVE-2016-10195 CVE-2016-10196 CVE-2016-10197 Upstream summary: Debian Security reports: CVE-2016-10195: The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have […]

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How to Configure PHP Error Logging on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure PHP Error Logging on CentOS Stream 9

Introduction How to Configure PHP Error Logging on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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FreeBSD 13 — py31-django — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py31-django — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: django — multiple vulnerabilities Related CVEs: CVE-2009-3695 CVE-2010-3082 CVE-2014-0472 CVE-2014-0473 CVE-2014-0474 Upstream summary: The Django project reports: These releases address an unexpected code-execution issue, a caching issue which can expose […]

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FreeBSD 13 — p5-Email-Address-List — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — p5-Email-Address-List — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: p5-Email-Address-List — DDoS related vulnerability Related CVEs: CVE-2014-1474 CVE-2018-18898 Upstream summary: Best PRactical Solutions reports: 0.06 2019-01-02 – Changes to address CVE-2018-18898 which could allow DDoS-type attacks. Thanks to Lukas […]

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