Troubleshooting

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 10 (DEBIAN-10-2)

  • March 21, 2020
  • Linux
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Introduction Deploying configure nginx as a tcp/udp load balancer on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2020-1495)

  • March 21, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1495 Related CVEs: CVE-2020-6821 CVE-2020-6822 CVE-2020-6820 CVE-2020-6825 CVE-2020-6819 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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FreeBSD 12 — go — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — go — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • March 21, 2020
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 21 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: go — excessive resource consumption Related CVEs: CVE-2015-5739 CVE-2015-5740 CVE-2015-5741 CVE-2015-8618 CVE-2016-3959 CVE-2019-16276 CVE-2020-16845 CVE-2020-24553  +12 more Upstream summary: The Go project reports: Within HostnameError.Error(), when constructing an error string, […]

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FreeBSD 12 — serendipity-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — serendipity-devel — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • March 20, 2020
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: serendipity — multiple cross site scripting vulnerabilities Related CVEs: CVE-2008-1385 CVE-2008-1386 Upstream summary: Hanno Boeck reports: The installer of serendipity 1.3 has various Cross Site Scripting issues. This is considered […]

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Common Problems 113638

Windows Server 2012 R2 — Component store partial rebuild leaves features missing after restore — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 March 2020 Affected versions: Windows Server 2012 R2 📖 ~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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FreeBSD 12 — abiword — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — abiword — vulnerability — patch and remediation guide

  • March 20, 2020
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: abiword, koffice — stack based buffer overflow vulnerabilities Related CVEs: CAN-2005-2972 Upstream summary: Chris Evans reports that AbiWord is vulnerable to multiple stack-based buffer overflow vulnerabilities. This is caused by […]

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How to Configure ZFS Snapshots and Rollback on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure ZFS Snapshots and Rollback on FreeBSD 12

  • March 20, 2020
  • FreeBSD
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Introduction Deploying configure zfs snapshots and rollback on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the […]

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Common Problems 112530

Windows Server 2019 Storage Replica Backlog Growth During Peak Write Periods – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 March 2020 Affected versions: Windows Server 2019 📖 ~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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Ubuntu 18.04 — dino-im — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — dino-im — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • March 20, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 20 March 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4306-1 Related CVEs: CVE-2019-16235 CVE-2019-16236 CVE-2019-16237 https://bugs.launchpad.net/bugs/1866115 Upstream summary: It was discovered that Dino incorrectly validated inputs. An attacker could use this issue to possibly obtain, inject or remove sensitive […]

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