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Oracle Linux 8 — olcne — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — olcne — vulnerability — patch and remediation guide (ELSA-2021-9267)

🟠 High   ⏱ 15–60 min  Last verified: 16 March 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9267 Related CVEs: CVE-2021-27918 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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Amazon Linux 2 — batik — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — batik — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-1966 Related CVEs: CVE-2020-11987 CVE-2022-38398 CVE-2022-38648 CVE-2022-40146 CVE-2022-41704 CVE-2022-42890 CVE-2022-44729 CVE-2022-44730 Upstream summary: Apache Batik 1.13 is vulnerable to server-side request forgery, caused by improper input validation by the NodePickerPanel. […]

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Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide (ELSA-2022-9950)

🟠 High   ⏱ 15–60 min  Last verified: 16 March 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9950 Related CVEs: CVE-2022-21628 CVE-2022-21618 CVE-2022-21624 CVE-2022-2097 CVE-2022-32213 CVE-2022-32212 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Gentoo Linux — media-gfx/exiv2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-gfx/exiv2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202312-06 Related CVEs: CVE-2020-18771 CVE-2020-18773 CVE-2020-18774 CVE-2020-18899 CVE-2021-29457 CVE-2021-29458 CVE-2021-29463 CVE-2021-29464  +12 more Upstream summary: Multiple vulnerabilities have been discovered in Exiv2. Please review the CVE identifiers referenced below for details. Table […]

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How to Set Up Tripwire for File Integrity Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Tripwire for File Integrity Monitoring on RHEL 7

How to Set Up Tripwire for File Integrity Monitoring on RHEL 7 File Integrity Monitoring (FIM) is the practice of detecting unauthorised changes to critical system files, configuration files, and binaries. When an attacker compromises a system, they often modify files to install backdoors, alter logging behaviour, or escalate privileges. Tripwire creates a cryptographic baseline […]

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Common Problems 120623

Debian 11: UFW blocks required application ports

🟡 Medium   ⏱ 5–30 min  Last verified: 16 March 2022 Affected versions: Debian 11 📖 ~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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IBM AIX 7.3 — CVE-1999-0010 — denial of service — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-0010 — denial of service — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 15 March 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-0010, IBM PSIRT advisory page CVE: CVE-1999-0010 NVD summary: Denial of Service vulnerability in BIND 8 Releases via maliciously formatted DNS messages. References: ftp://patches.sgi.com/support/free/security/advi   www1.itrc.hp.com/service/cki/docDisplay.do?docId   ftp://patches.sgi.com/support/free/security/advi Table of contents Symptom […]

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

FreeBSD 13 — proxytunnel — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 15 March 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: proxytunnel — format string vulnerability Related CVEs: CVE-2004-0992 Upstream summary: A Gentoo Linux Security Advisory reports: Florian Schilhabel of the Gentoo Linux Security Audit project found a format string vulnerability […]

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FreeBSD 13 — opendmarc — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — opendmarc — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 15 March 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenDMARC – Remote denial of service Related CVEs: CVE-2019-16378 CVE-2019-20790 CVE-2020-12272 CVE-2020-12460 CVE-2021-34555 Upstream summary: OpenDMARC 1.4.1 and 1.4.1.1 will dereference a NULL pointer when encountering a multi-value From: header […]

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