Operations

FreeBSD 13 — cde — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — cde — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 December 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: x11/cde — Local privilege escalation via CDE dtsession Related CVEs: CVE-2020-2696 Upstream summary: Marco Ivaldi (marco.ivaldi () mediaservice net) reports: A buffer overflow in the CheckMonitor() function in the Common […]

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Oracle Linux 8 — sqlite — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — sqlite — security and stability fixes — required update (ELSA-2020-1810)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1810 Related CVEs: CVE-2019-19924 CVE-2019-19925 CVE-2019-8457 CVE-2019-13753 CVE-2019-13752 CVE-2019-19959 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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FreeBSD 12 — libcaca — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libcaca — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 December 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libcaca — Multiple vulnerabilities Related CVEs: CVE-2018-20545 CVE-2018-20546 CVE-2018-20547 CVE-2018-20548 CVE-2018-20549 CVE-2021-30498 CVE-2021-30499 CVE-2021-3410 Upstream summary: Sam Hocevar reports: Multiple memory leaks and invalid memory accesses: CVE-2018-20545: Illegal WRITE memory […]

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Common Problems 117424

Ubuntu 20.04 LTS Netplan Apply Drops SSH Connectivity

🟡 Medium   ⏱ 5–30 min  Last verified: 4 December 2021 📖 ~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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How to Set Up a LEMP Stack on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up a LEMP Stack on SLES 12

Introduction This tutorial covers How to Set Up a LEMP Stack on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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FreeBSD 13 — pcal — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pcal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 December 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pcal — buffer overflow vulnerabilities Related CVEs: CVE-2004-1289 Upstream summary: Danny Lungstrom has found two buffer overflow vulnerabilities in pcal which can lead to execution of arbitrary code by making […]

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How to Tune Asynchronous I/O on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Tune Asynchronous I/O on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to tune asynchronous i/o on ibm aix 7.2 on IBM […]

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 4 December 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: zeek — potential DoS vulnerability Upstream summary: Wojtulewicz of Corelight reports: A specially-crafted series of MIME headers sent via SMTP or HTTP could cause Zeek to use large amounts of […]

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Debian 11 — tmate-ssh-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tmate-ssh-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-44512 CVE-2021-44513 Upstream summary: World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write […]

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Debian 11 — imlib2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — imlib2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0802 CVE-2004-1026 CVE-2006-4806 CVE-2006-4807 CVE-2006-4808 CVE-2006-4809 CVE-2008-2426 CVE-2008-5187  +12 more Upstream summary: Buffer overflow in the BMP loader in imlib2 before 1.1.2 allows remote attackers to execute arbitrary […]

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