December 2021 - Page 43 of 71

Common Problems 114083

RHEL 10 – tuned profile switches back to balanced unexpectedly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: RHEL 10 📖 ~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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FreeBSD 13 — sogo — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — sogo — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: SOGo — SAML user authentication impersonation Related CVEs: CVE-2021-33054 Upstream summary: sogo.nu reports: SOGo was not validating the signatures of any SAML assertions it received. This means any actor with […]

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FreeBSD 13 — py310-Flask-Cors — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py310-Flask-Cors — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-Flask-Cors — directory traversal vulnerability Related CVEs: CVE-2020-25032 Upstream summary: praetorian-colby-morgan reports: An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal […]

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How to Configure Nginx Rate Limiting on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Nginx Rate Limiting on FreeBSD 13

Introduction Deploying configure nginx rate limiting on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

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Debian 11 — x11-xserver-utils — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — x11-xserver-utils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-0465 Upstream summary: xrdb.c in xrdb before 1.0.9 in X.Org X11R7.6 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from […]

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

FreeBSD 13 — sql-ledger — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sql-ledger — security bypass vulnerability Related CVEs: CVE-2006-4244 CVE-2006-4731 CVE-2006-5872 Upstream summary: Chris Travers reports: George Theall of Tenable Security notified the LedgerSMB core team today of an authentication bypass […]

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How to Set Up a Jekyll Development Site on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up a Jekyll Development Site on Ubuntu 16.04

Jekyll is a static-site generator that provides some of the benefits of a Content Management System (CMS) while avoiding the performance and security issues introduced by such database-driven sites. In this tutorial, we will install a Jekyll 3.7.3 development site on Ubuntu 16.04. In later tutorials, we’ll explore the content generated here, publish a static site to the same server, and eventually deploy to a production location.

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FreeBSD 12 — libmysofa — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libmysofa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libmysoft — Heap-based buffer overflow vulnerability Related CVEs: CVE-2021-3756 Upstream summary: Zhengjie Du reports: There are some heap-buffer-overflows in mysofa2json of libmysofa. They are in function loudness, mysofa_check and readOHDRHeaderMessageDataLayout. […]

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