Logging Monitoring

Ubuntu 16.04 — jackson-databind — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — jackson-databind — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • January 21, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 January 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4813-1 Related CVEs: CVE-2018-11307 CVE-2018-12022 CVE-2018-12023 CVE-2018-14718 CVE-2018-14719 CVE-2018-14720 CVE-2018-14721 CVE-2018-19360  +12 more Upstream summary: It was discovered that Jackson Databind incorrectly handled deserialization. An attacker could possibly use this […]

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How to Configure iptables Firewall Rules on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure iptables Firewall Rules on RHEL 8

  • January 21, 2020
  • Linux
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Although firewalld ships as the default firewall manager on RHEL 8, some administrators prefer the well-known iptables command syntax for its long history, broad documentation, and deterministic rule ordering. RHEL 8 supports running iptables as a standalone service through the iptables-services package, which must be installed after disabling firewalld to avoid conflicts. This tutorial covers […]

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Arch Linux — gajim — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — gajim — vulnerability — patch and remediation guide

  • January 21, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201706-4 Related CVEs: CVE-2016-1037 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 0.16.7-1. Fixed in: 0.16.8-1. Group: AVG-284. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Ubuntu 18.04 — pacemaker — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pacemaker — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • January 21, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4623-1 Related CVEs: CVE-2020-25654 CVE-2018-16877 CVE-2018-16878 CVE-2019-3885 Upstream summary: Ken Gaillot discovered that Pacemaker incorrectly handled IPC communications permissions. A local attacker could possibly use this issue to bypass ACL […]

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Oracle Linux 8 — spice and spice-gtk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — spice and spice-gtk — vulnerability — patch and remediation guide (ELSA-2020-4186)

  • January 21, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4186 Related CVEs: CVE-2020-14355 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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Oracle Linux 8 — oci-utils — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — oci-utils — vulnerability — patch and remediation guide (ELSA-2026-65202)

  • January 21, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-65202 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 […]

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Common Problems 112969

Windows Server 2016 – Storage Replica log volume runs out of space during peak writes – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 January 2020 Affected versions: Windows Server 2016 📖 ~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 — libproxy-webkit — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libproxy-webkit — vulnerability — patch and remediation guide

  • January 20, 2020
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libproxy — stack-based buffer overflow Related CVEs: CVE-2012-4504 Upstream summary: Tomas Hoger reports: A buffer overflow flaw was discovered in the libproxy's url::get_pac() used to download proxy.pac proxy auto-configuration file. […]

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FreeBSD 12 — linux_base-c6_ — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux_base-c6_ — vulnerability — patch and remediation guide

  • January 20, 2020
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: glibc — getaddrinfo stack-based buffer overflow Related CVEs: CVE-2015-7547 Upstream summary: Fabio Olive Leite reports: A stack-based buffer overflow was found in libresolv when invoked from nss_dns, allowing specially crafted […]

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FreeBSD 12 — chicken — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — chicken — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • January 20, 2020
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 20 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: chicken — multiple vulnerabilities Related CVEs: CVE-2014-9651 CVE-2015-4556 CVE-2016-6830 CVE-2016-6831 CVE-2016-9954 CVE-2017-11343 CVE-2017-6949 CVE-2017-9334 Upstream summary: CHICKEN reports: CVE-2017-6949: Unchecked malloc() call in SRFI-4 constructors when allocating in non-GC memory, […]

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