IT, Cloud & DevOps Blog

SLES 15 — perl-DBD-mysql — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — perl-DBD-mysql — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 July 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2017:0122-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-1246 CVE-2016-1251 CVE-2017-10788 CVE-2017-10789 CVE-2016-1249 Upstream summary: Buffer overflow in the DBD::mysql module before 4.037 for Perl allows context-dependent attackers to cause a denial of […]

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Debian 10 — ruby-mini-magick — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — ruby-mini-magick — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 July 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-13574 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Set Up a Highly Available Web Stack with Keepalived on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Highly Available Web Stack with Keepalived on RHEL 8

A highly available web stack ensures that your application remains accessible even when one of your servers fails. Keepalived implements the Virtual Router Redundancy Protocol (VRRP) on Linux, allowing a floating Virtual IP (VIP) address to migrate automatically between a master and one or more backup servers within seconds of a failure. When combined with […]

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Common Problems 118994

Ubuntu 14.04 LTS Apache2 Fails to Start After Config Change

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2019 📖 ~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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Common Problems 118057

Ubuntu 18.04 Nginx Fails to Start Due to Port 80 Conflict

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2019 📖 ~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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Common Problems 118052

Ubuntu 18.04 LTS OpenSSL updates break legacy TLS clients

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2019 📖 ~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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FreeBSD 12 — perdition — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — perdition — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: perdition — str_vwrite format string vulnerability Related CVEs: CVE-2007-5740 Upstream summary: SEC-Consult reports: Perdition IMAP is affected by a format string bug in one of its IMAP output-string formatting functions. […]

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