Logging Monitoring

Ubuntu 18.04 — ntfs-3g — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ntfs-3g — multiple vulnerabilities (12 CVEs) — patch and remediation guide

  • November 11, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 11 November 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5711-1 Related CVEs: CVE-2022-40284 CVE-2021-46790 CVE-2022-30783 CVE-2022-30784 CVE-2022-30785 CVE-2022-30786 CVE-2022-30787 CVE-2022-30788  +4 more Upstream summary: Yuchen Zeng and Eduardo Vela discovered that NTFS-3G incorrectly validated certain NTFS metadata. A local […]

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Ubuntu 22.04 — libbpf — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libbpf — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • November 11, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 11 November 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5759-1 Related CVEs: CVE-2021-45940 CVE-2021-45941 CVE-2022-3533 CVE-2022-3534 CVE-2022-3606 Upstream summary: It was discovered that LibBPF incorrectly handled certain memory operations under certain circumstances. An attacker could possibly use this issue […]

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

Oracle Linux 9 — rsync — vulnerability — patch and remediation guide (ELSA-2022-6181)

  • November 11, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 11 November 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6181 Related CVEs: CVE-2022-29154 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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Common Problems 121499

Debian 9 Unmet Dependencies During full-upgrade

  • November 10, 2022
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 10 November 2022 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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IBM AIX 7.3 — CVE-1999-0072 — buffer overflow — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-0072 — buffer overflow — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 10 November 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-0072, IBM PSIRT advisory page CVE: CVE-1999-0072 NVD summary: Buffer overflow in AIX xdat gives root access to local users. References: exchange.xforce.ibmcloud.com/vulnerabilities/CVE   exchange.xforce.ibmcloud.com/vulnerabilities/CVE Table of contents Symptom & Impact Environment & […]

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Common Problems 116958

Ubuntu 22.04 LTS – cloud-init package stage times out on first boot – Fix & Prevention

  • November 10, 2022
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2022 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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Debian 11 — pyfribidi — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pyfribidi — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • November 10, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 10 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-3444 CVE-2012-1176 Upstream summary: Buffer overflow in the log2vis_utf8 function in pyfribidi.c in GNU FriBidi 0.19.1, 0.19.2, and possibly other versions, as used in PyFriBidi 0.10.1, allows remote […]

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How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 9

  • November 10, 2022
  • Linux
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The Prometheus Blackbox Exporter allows you to probe external endpoints over HTTP, HTTPS, TCP, and ICMP and expose the results as Prometheus metrics. Unlike Node Exporter, which reports what is happening inside a host, the Blackbox Exporter reports whether a service is reachable from the outside — making it ideal for end-to-end availability checks. This […]

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Common Problems 115582

Severe swap thrashing and poor performance

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2022 📖 ~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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