How To Configure Nginx as a Reverse Proxy on Ubuntu
Learn how to configure Nginx as a reverse proxy on Ubuntu. Step-by-step setup with HTTPS, headers, WebSockets, and load balancing examples.
Oracle Linux 10 – SSSD Offline and Domain Users Cannot Authenticate – Identity Service Recovery
🔴 Critical ⏱ 5–30 min Last verified: 17 August 2025 Affected versions: Oracle Linux 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 […]
Oracle Linux 10 – journalctl logs rotate too aggressively and lose incident evidence
🟡 Medium ⏱ 5–30 min Last verified: 17 August 2025 Affected versions: Oracle Linux 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 […]
Debian 12 — libcgi-simple-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 17 August 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2010-2761 CVE-2010-4410 CVE-2010-4411 CVE-2025-40927 Upstream summary: The multipart_init function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple 1.112 and earlier uses a hardcoded value of the […]
How to Configure Kerberos Client on Debian 13
Introduction This guide explains how to Configure Kerberos Client on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the standard […]
Debian 13 — libotr — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 17 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2012-3461 CVE-2016-2851 Upstream summary: The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 […]
Debian 13 — adminer — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 17 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2018-7667 CVE-2020-35572 CVE-2021-21311 CVE-2021-29625 CVE-2021-43008 CVE-2023-45195 CVE-2023-45196 CVE-2025-43960 Upstream summary: Adminer through 4.3.1 has SSRF via the server parameter. Table of contents Symptom & Impact Environment & Reproduction […]
Debian 13 GRUB Rescue Prompt After Disk Layout Change
🟡 Medium ⏱ 5–30 min Last verified: 17 August 2025 📖 ~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 […]
Debian 13 — iaxmodem — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 17 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2006-2898 Upstream summary: The IAX2 channel driver (chan_iax2) for Asterisk 1.2.x before 1.2.9 and 1.0.x before 1.0.11 allows remote attackers to cause a denial of service (crash) and […]
Debian 13 — libcpan-checksums-perl — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 17 August 2025 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2020-16155 Upstream summary: The CPAN::Checksums package 2.12 for Perl does not uniquely define signed data. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]
