2021 - Page 532 of 759

FreeBSD 13 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenVPN — out-of-bounds write in legacy key-method 1 Related CVEs: CVE-2017-12166 CVE-2017-7478 CVE-2017-7479 CVE-2017-7508 CVE-2017-7512 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 Upstream summary: Steffan Karger reports: The bounds check in read_key() was performed […]

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FreeBSD 13 — mkvtoolnix — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mkvtoolnix — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mkvtoolnix — code execution via specially crafted files Upstream summary: Moritz Bunkus reports: most of the bugs fixed on 2016-09-06 and 2016-09-07 for issue #1780 are potentially exploitable. The scenario […]

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FreeBSD 13 — rubygem-rack — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem-rack — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rack — possible denial of service vulnerability in header parsing Related CVEs: CVE-2011-4815 CVE-2011-4838 CVE-2011-5036 CVE-2011-5037 CVE-2015-1840 CVE-2015-3224 CVE-2015-3225 CVE-2015-3226  +7 more Upstream summary: ooooooo_q reports: Carefully crafted input can […]

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AlmaLinux 8 — lz4 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — lz4 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:11035 Related CVEs: CVE-2019-17543 CVE-2021-3520 Upstream summary: The lz4 packages provide support for LZ4, a very fast, lossless compression algorithm that provides compression speeds of 400 MB/s per core and scales with […]

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How to Set Up SSH Key-Based Authentication on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up SSH Key-Based Authentication on RHEL 7

How to Set Up SSH Key-Based Authentication on RHEL 7 SSH key-based authentication replaces password logins with a cryptographic key pair: a private key that stays on your local machine and a public key that you install on the remote server. When you connect, the server challenges your SSH client to prove it holds the […]

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AlmaLinux 8 — jackson-module-jaxb-annotations — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — jackson-module-jaxb-annotations — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2019:2720 Related CVEs: CVE-2019-12384 CVE-2018-11784 CVE-2018-8014 CVE-2018-8034 CVE-2018-8037 CVE-2019-14540 CVE-2019-16335 CVE-2019-16942  +9 more Upstream summary: The Public Key Infrastructure (PKI) Deps module contains fundamental packages required as dependencies for the pki-core module […]

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TLS vs SSL: Understanding Key Differences and Why It Matters — step-by-step Linux tutorial on Progressive Robot

TLS vs SSL: Understanding Key Differences and Why It Matters

Learn the key differences between TLS and SSL protocols, why TLS has replaced SSL for modern web security, and how these encryption standards impact your website’s security and performance. Understand their evolution, security implications, and best practices for implementation.

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FreeBSD 13 — postfixadmin — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — postfixadmin — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: postfixadmin — SQL injection vulnerability Related CVEs: CVE-2012-0811 CVE-2012-0812 CVE-2014-2655 Upstream summary: Thijs Kinkhorst reports: Postfixadmin has an SQL injection vulnerability. This vulnerability is only exploitable by authenticated users able […]

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Debian 10 — python-flask-cors — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — python-flask-cors — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 April 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-25032 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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Gentoo Linux — www-apps/nextcloud — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — www-apps/nextcloud — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202208-17 Related CVEs: CVE-2021-32653 CVE-2021-32654 CVE-2021-32655 CVE-2021-32656 CVE-2021-32657 CVE-2021-32678 CVE-2021-32679 CVE-2021-32680  +12 more Upstream summary: Multiple vulnerabilities have been discovered in Nextcloud. Please review the CVE identifiers referenced below for details. Table […]

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