Security Hardening

Amazon Linux 2 — patch — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — patch — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2019-1317 Related CVEs: CVE-2016-10713 CVE-2018-1000156 CVE-2018-20969 CVE-2018-6952 CVE-2019-13638 CVE-2015-1418 CVE-2019-13636 Upstream summary: do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: […]

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FreeBSD 12 — ja-mutt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ja-mutt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mutt — denial of service via crafted mail message Related CVEs: CVE-2004-0078 CVE-2007-2683 CVE-2014-9116 Upstream summary: NVD reports: The write_one_header function in mutt 1.5.23 does not properly handle newline characters […]

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FreeBSD 12 — leafnode — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — leafnode — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: leafnode — denial of service vulnerability Related CVEs: CVE-2002-1661 CVE-2003-0744 CVE-2004-2068 CVE-2005-1453 CVE-2005-1911 Upstream summary: Matthias Andree reports: A vulnerability was found in the fetchnews program (the NNTP client) that […]

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Debian 9 — python-apt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — python-apt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 June 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-15795 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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SLES 15 — vsftpd — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — vsftpd — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2015:0417-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-1419 Upstream summary: Unspecified vulnerability in vsftpd 3.0.2 and earlier allows remote attackers to bypass access restrictions via unknown vectors, related to deny_file parsing. Table […]

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How to Set Up a Print Server on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up a Print Server on Windows Server 2019

How to Set Up a Print Server on Windows Server 2019 A print server centralizes printer management for an organization, allowing users to connect to shared printers without needing to install drivers individually on each workstation. Windows Server 2019 includes the Print and Document Services role which provides centralized printer deployment via Group Policy, driver […]

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FreeBSD 12 — de-netscape — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — de-netscape — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: firefox & mozilla — multiple vulnerabilities Related CVEs: CVE-2004-0597 CVE-2004-0598 CVE-2004-0599 CVE-2004-0762 CVE-2004-0765 CVE-2004-0904 CVE-2004-0905 CVE-2004-0908  +12 more Upstream summary: A Mozilla Foundation Security Advisory reports of multiple issues: Heap […]

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How to Secure Nginx with Let's Encrypt and Certbot on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt and Certbot on RHEL 7

How to Secure Nginx with Let’s Encrypt and Certbot on RHEL 7 Let’s Encrypt is a free, automated, and open Certificate Authority (CA) that provides SSL/TLS certificates to enable HTTPS on your web server. Certbot is the official client tool for obtaining and renewing Let’s Encrypt certificates. On RHEL 7, Certbot is available through the […]

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Common Problems 115067

SSSD Offline Cache Used Unexpectedly for Domain Users

🟡 Medium   ⏱ 5–30 min  Last verified: 20 June 2019 📖 ~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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FreeBSD 12 — libcdaudio — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libcdaudio — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libcdaudio — remote buffer overflow and code execution Related CVEs: CVE-2005-0706 CVE-2008-5030 Upstream summary: securityfocus reports: The 'libcdaudio' library is prone to a remote heap code in the context of […]

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CHAT