Logging Monitoring

Ubuntu 18.04 — htslib — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — htslib — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4802-1 Related CVEs: CVE-2017-1000206 CVE-2018-13845 Upstream summary: It was discovered that HTSlib incorrectly handled certain data. An attacker could possibly use this issue to execute arbitrary code. This issue affected […]

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How to Set Up a Highly Available Web Stack with Keepalived on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up a Highly Available Web Stack with Keepalived on RHEL 7

How to Set Up a Highly Available Web Stack with Keepalived on RHEL 7 High availability eliminates single points of failure by ensuring that if one server goes down, another takes over seamlessly. For web servers, one of the most common HA patterns is a Virtual IP (VIP) address that floats between two or more […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3927-1 Related CVEs: CVE-2018-18506 CVE-2019-9788 CVE-2019-9790 CVE-2019-9791 CVE-2019-9792 CVE-2019-9793 CVE-2019-9795 CVE-2019-9796  +12 more Upstream summary: It was discovered that Thunderbird allowed PAC files to specify that requests to localhost are […]

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Ubuntu 16.04 — opencv — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — opencv — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4818-1 Related CVEs: CVE-2019-15939 CVE-2019-14491 CVE-2017-18009 CVE-2019-14492 CVE-2019-14493 Upstream summary: It was discovered that OpenCV did not properly manage certain objects, leading to a divide-by-zero. If a user were tricked […]

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openSUSE Tumbleweed — python36-slixmpp — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-slixmpp — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:0163-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-1000021 Upstream summary: slixmpp version before commit 7cd73b594e8122dddf847953fcfc85ab4d316416 contains an incorrect Access Control vulnerability in XEP-0223 plugin (Persistent Storage of Private Data via PubSub) options […]

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FreeBSD 12 — postfix-current-base — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postfix-current-base — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Postfix — memory corruption vulnerability Related CVEs: CVE-2011-0411 CVE-2011-1720 Upstream summary: The Postfix SMTP server has a memory corruption error, when the Cyrus SASL library is used with authentication mechanisms […]

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Common Problems 113928

RHEL 10 SELinux AVC Denials Break Web Application Access

🔴 Critical   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 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 & […]

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FreeBSD 12 — py26-pycrypto — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py26-pycrypto — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pycrypto — PRNG reseed race condition Related CVEs: CVE-2013-1445 Upstream summary: Dwayne Litzenberger reports: In PyCrypto before v2.6.1, the Crypto.Random pseudo-random number generator (PRNG) exhibits a race condition that may […]

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FreeBSD 12 — hafiye — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — hafiye — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: hafiye — lack of terminal escape sequence filtering Upstream summary: A siyahsapka.org advisory reads: Hafiye-1.0 doesnt filter the payload when printing it to the terminal. A malicious attacker can send […]

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How to Set Up iSCSI Target Server on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up iSCSI Target Server on Windows Server 2012 R2

How to Set Up iSCSI Target Server on Windows Server 2012 R2 iSCSI (Internet Small Computer Systems Interface) is a storage networking protocol that enables block-level storage access over a standard TCP/IP network. Windows Server 2012 R2 includes a built-in iSCSI Target Server role service that allows you to create and manage iSCSI targets — […]

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