Package Management

Ubuntu 20.04 — edk2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — edk2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 20 June 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7060-1 Related CVEs: CVE-2019-0161 CVE-2021-28210 CVE-2021-28211 CVE-2021-38575 CVE-2021-38578 CVE-2022-1292 CVE-2022-36763 CVE-2022-36764  +12 more Upstream summary: It was discovered that EDK II did not check the buffer length in XHCI, which […]

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Ubuntu 18.04 — barbican — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — barbican — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 June 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5697-1 Related CVEs: CVE-2022-3100 CVE-2022-23451 CVE-2022-23452 Upstream summary: Douglas Mendizabal discovered that Barbican incorrectly handled certain query strings. A remote attacker could possibly use this issue to bypass the access […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2023-0824)

🟠 High   ⏱ 15–60 min  Last verified: 20 June 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0824 Related CVEs: CVE-2023-25732 CVE-2023-25728 CVE-2023-25737 CVE-2023-25742 CVE-2023-25743 CVE-2023-25739 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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openSUSE Leap 15.5 — libwebp7 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — libwebp7 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:2064-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-1999 Upstream summary: There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free […]

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Common Problems 120183

Debian 12 – Certbot Renewal Fails in Automation – Reliable ACME Recovery

🟠 High   ⏱ 5–30 min  Last verified: 20 June 2023 Affected versions: Debian 12 📖 ~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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Alpine Linux 3.18 — go — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — go — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.9.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — go 1.9.4-r0 Related CVEs: CVE-2018-6574 CVE-2023-39323 CVE-2023-39318 CVE-2023-39319 CVE-2023-39321 CVE-2023-39322 CVE-2023-29406 CVE-2023-29409  +12 more Upstream summary: Alpine community repository for vv3.18 ships go 1.9.4-r0 which […]

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Oracle Linux 9 — krb5 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — krb5 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-2570)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 June 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2570 Related CVEs: CVE-2020-17049 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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NetBSD 9.4 — p5-libapreq2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — p5-libapreq2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2006-0042 CVE-2019-12412 CVE-2022-22728 Upstream summary: pkgsrc audit-packages flagged p5-libapreq2<2.07 for vulnerability class 'denial-of-service'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0042 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Common Problems 121584

Debian 9 – UFW policy blocks package downloads and outbound HTTPS

🟡 Medium   ⏱ 5–30 min  Last verified: 19 June 2023 Affected versions: Debian 9 📖 ~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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How to Configure Grafana Loki on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Grafana Loki on Oracle Linux 9

Introduction Setting up configure grafana loki on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Grafana Loki on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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