Linux

Common Problems 117605

Ubuntu 20.04 LTS Failed to Start OpenVPN Service

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2023 📖 ~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 […]

Read more
Debian 12 — sabnzbdplus — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — sabnzbdplus — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-13124 CVE-2021-29488 CVE-2023-34237 Upstream summary: SABnzbd 2.3.9 and 3.0.0Alpha2 has a command injection vulnerability in the web configuration interface that permits an authenticated user to execute arbitrary Python […]

Read more
Debian 12 — libsolv — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libsolv — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-20532 CVE-2018-20533 CVE-2018-20534 CVE-2019-20387 CVE-2021-3200 CVE-2021-33928 CVE-2021-33929 CVE-2021-33930  +4 more Upstream summary: There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 […]

Read more
How to Configure AppArmor for Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure AppArmor for Nginx on Debian 12

Introduction Deploying configure apparmor for nginx on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

Read more
Debian 12 — pgpdump — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — pgpdump — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-4021 Upstream summary: The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted […]

Read more
Ubuntu 22.04 — linux-gcp-5.19 — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — linux-gcp-5.19 — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6260-1 Related CVEs: CVE-2022-48502 CVE-2023-2640 CVE-2023-3090 CVE-2023-31248 CVE-2023-3141 CVE-2023-32629 CVE-2023-3389 CVE-2023-3390  +5 more Upstream summary: It was discovered that the NTFS file system implementation in the Linux kernel did not […]

Read more
Ubuntu 22.04 — flac — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — flac — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6360-1 Related CVEs: CVE-2020-22219 CVE-2017-6888 CVE-2020-0499 CVE-2021-0561 Upstream summary: It was discovered that FLAC incorrectly handled encoding certain files. A remote attacker could use this issue to cause FLAC to […]

Read more
Debian 12 — mupdf — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — mupdf — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-5340 CVE-2014-2013 CVE-2016-10246 CVE-2016-10247 CVE-2016-6265 CVE-2016-6525 CVE-2016-8674 CVE-2017-14685  +12 more Upstream summary: SumatraPDF 2.1.1/MuPDF 1.0 allows remote attackers to cause an Integer Overflow in the lex_number() function via […]

Read more
Oracle Linux 9 — gstreamer1, gstreamer1-plugins-bad-free, gstreamer1-plugins-ugly-free, and gstreamer1-rtsp-server — vulnerability — patch and remediation… — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — gstreamer1, gstreamer1-plugins-bad-free, gstreamer1-plugins-ugly-free, and gstreamer1-rtsp-server — vulnerability — patch a… (ELSA-2025-7178)

🟡 Medium   ⏱ 10–30 min  Last verified: 7 August 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7178 Related CVEs: CVE-2024-4453 CVE-2024-0444 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
CHAT