Logging Monitoring

How to Set Up Automatic SSH Login Banners on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up Automatic SSH Login Banners on RHEL 8

Login banners are a critical security control that display legal warnings before and after users authenticate to a system. On RHEL 8, three separate mechanisms control banner messages: /etc/issue for local console pre-login text, /etc/issue.net for SSH pre-login banners, and /etc/motd for the message of the day shown after login. Properly configured banners inform authorized […]

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Ubuntu 14.04 — elfutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — elfutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 June 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6322-1 Related CVEs: CVE-2018-16062 CVE-2018-16403 CVE-2018-18310 CVE-2018-18520 CVE-2018-18521 CVE-2019-7149 CVE-2019-7150 CVE-2019-7665  +12 more Upstream summary: It was discovered that elfutils incorrectly handled certain malformed files. If a user or automated […]

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Alpine Linux edge — quagga — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — quagga — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.1.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — quagga 1.1.1-r0 Related CVEs: CVE-2017-5495 Upstream summary: Alpine main repository for vedge ships quagga 1.1.1-r0 which addresses CVE-2017-5495. Table of contents Symptom & Impact Environment […]

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Common Problems 118966

Ubuntu 14.04 LTS – /var fills with logs and stops critical services – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2019 Affected versions: Ubuntu 14.04 LTS 📖 ~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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openSUSE Tumbleweed — libIL1 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libIL1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2009-3994 Upstream summary: Stack-based buffer overflow in the GetUID function in src-IL/src/il_dicom.c in DevIL 1.7.8 allows remote attackers to cause a denial of service (application crash) or execute arbitrary […]

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FreeBSD 12 — avahi-autoipd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — avahi-autoipd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: avahi — denial of service Related CVEs: CVE-2010-2244 CVE-2011-1002 Upstream summary: Avahi developers reports: A vulnerability has been reported in Avahi, which can be exploited by malicious people to cause […]

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FreeBSD 12 — heimdal — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — heimdal — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: heimdal — bypass of capath policy Related CVEs: CVE-2004-0371 CVE-2004-0434 CVE-2005-0469 CVE-2005-2040 CVE-2006-0582 CVE-2006-0677 Upstream summary: Viktor Dukhovni reports: Commit f469fc6 (2010-10-02) inadvertently caused the previous hop realm to not […]

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FreeBSD 12 — bogofilter-tc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — bogofilter-tc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: bogofilter — heap corruption by invalid base64 input Related CVEs: CVE-2010-2494 CVE-2012-5468 Upstream summary: David Relson reports: Fix a heap corruption in base64 decoder on invalid input. Analysis and patch […]

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FreeBSD 12 — linux-c7-tiff — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-c7-tiff — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 9 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tiff — multiple vulnerabilities Related CVEs: CVE-2015-8870 CVE-2016-5652 CVE-2016-9533 CVE-2016-9534 CVE-2016-9535 CVE-2016-9536 CVE-2016-9537 CVE-2016-9540  +12 more Upstream summary: NVD reports: Please reference CVE/URL list for details Table of contents Symptom […]

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openSUSE Tumbleweed — ardour — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ardour — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2008:001 (see also SUSE bugzilla) Related CVEs: CVE-2007-4974 Upstream summary: Heap-based buffer overflow in the flac_buffer_copy function in libsndfile 1.0.17 and earlier might allow remote attackers to execute arbitrary code via a […]

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