Operations

Ubuntu 16.04 — opusfile — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — opusfile — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5937-1 Related CVEs: CVE-2022-47021 Upstream summary: It was discovered that Opusfile was not properly validating pointer arguments in some of its functions, which could lead to a NULL pointer dereference. […]

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Ubuntu 20.04 — libmysofa — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libmysofa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5184-1 Related CVEs: CVE-2021-3756 Upstream summary: It was discovered that libmysofa mishandled certain input. An attacker could use this vulnerability to cause a denial of service (crash). Table of contents […]

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Ubuntu 20.04 — gegl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — gegl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5251-1 Related CVEs: CVE-2021-45463 Upstream summary: It was discovered that GEGL incorrectly filtered and escaped file path input data when using the C system() function for execution of the ImageMagick […]

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How to Install Portainer on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Portainer on Debian 11

Introduction This guide explains how to Install Portainer on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the standard repositories […]

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SLES 15 — xom — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — xom — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 April 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:712-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-33813 Upstream summary: An XXE issue in SAXBuilder in JDOM through 2.0.6 allows attackers to cause a denial of service via a crafted HTTP request. […]

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SLES 15 — libtcmu2 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libtcmu2 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 April 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:69-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-3139 Upstream summary: In Open-iSCSI tcmu-runner 1.3.x, 1.4.x, and 1.5.x through 1.5.2, xcopy_locate_udev in tcmur_cmd_handler.c lacks a check for transport-layer restrictions, allowing remote attackers to […]

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FreeBSD 13 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xwayland — Multiple vulnerabilities Related CVEs: CVE-2017-12176 CVE-2017-12177 CVE-2017-12178 CVE-2017-12179 CVE-2017-12180 CVE-2017-12181 CVE-2017-12182 CVE-2017-12183  +12 more Upstream summary: X.Org project reports: Multiple issues have been found in the X server […]

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Amazon Linux 2 — apr-util — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — apr-util — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-1937 Related CVEs: CVE-2022-25147 Upstream summary: 2023-05-23: The severity level was changed from Critical to Medium. Integer Overflow or Wraparound vulnerability in apr_base64 functions of Apache Portable Runtime Utility (APR-util) […]

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Debian 11 — golang-1.15 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-1.15 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15586 CVE-2020-16845 CVE-2020-24553 CVE-2020-28362 CVE-2020-28366 CVE-2020-28367 CVE-2020-29509 CVE-2020-29510  +12 more Upstream summary: Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as […]

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How to Configure BGP Routing with BIRD on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure BGP Routing with BIRD on RHEL 8

Border Gateway Protocol (BGP) is the routing protocol that powers the internet, exchanging routing information between autonomous systems (AS). On RHEL 8, the BIRD Internet Routing Daemon provides a lightweight, production-grade BGP implementation available through the EPEL repository. This tutorial walks through installing BIRD, writing a BGP configuration with neighbor relationships and route filters, verifying […]

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