November 2021 - Page 24 of 66

Debian 11 — ruby-omniauth — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-omniauth — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-9284 CVE-2017-18076 CVE-2020-36599 Upstream summary: The request phase of the OmniAuth Ruby gem (1.9.1 and earlier) is vulnerable to Cross-Site Request Forgery when used as part of the […]

Read more
Debian 11 — revelation — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — revelation — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2742 CVE-2012-2743 CVE-2012-3818 Upstream summary: Revelation 0.4.13-2 and earlier uses only the first 32 characters of a password followed by a sequence of zeros, which reduces the entropy […]

Read more
Debian 11 — openpyxl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — openpyxl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-5992 Upstream summary: Openpyxl 2.4.1 resolves external entities by default, which allows remote attackers to conduct XXE attacks via a crafted .xlsx document. Table of contents Symptom & […]

Read more
How to Use Python Virtual Environments on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Use Python Virtual Environments on FreeBSD 13

Introduction Deploying use python virtual environments on freebsd 13 on a FreeBSD 13 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 standard […]

Read more
Debian 11 — software-properties — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — software-properties — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-4407 CVE-2012-0955 CVE-2013-1061 CVE-2020-15709 Upstream summary: ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) […]

Read more
Ubuntu 20.04 — dojo — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — dojo — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7569-1 Related CVEs: CVE-2021-23450 CVE-2020-4051 CVE-2019-10785 CVE-2018-15494 Upstream summary: It was discovered that Dojo did not correctly handle DataGrids. An attacker could possibly use this issue to execute arbitrary code. […]

Read more
How To Set Up a Firewall with UFW on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Firewall with UFW on Ubuntu 16.04

UFW, or Uncomplicated Firewall, is an interface to iptables that is geared towards simplifying the process of configuring a firewall. While iptables is a solid and flexible tool, it can be difficult for beginners to learn how to use it to properly configure a firewall. If you’re looking to get started securing your network, and you’re not sure which tool to use, UFW may be the right choice for you. This tutorial will show you how to set up a firewall with UFW on Ubuntu 16.04.

Read more
Oracle Linux 8 — freerdp — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — freerdp — vulnerability — patch and remediation guide (ELSA-2021-4622)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4622 Related CVEs: CVE-2021-41160 CVE-2021-41159 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
FreeBSD 13 — wireshark-qt — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — wireshark-qt — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: wireshark — multiple security issues Related CVEs: CVE-2015-6241 CVE-2015-6242 CVE-2015-6243 CVE-2015-6244 CVE-2015-6245 CVE-2015-6246 CVE-2015-6247 CVE-2015-6248  +12 more Upstream summary: wireshark developers reports: wnpa-sec-2018-05. IEEE 802.11 dissector crash. (CVE-2018-7335) wnpa-sec-2018-06. Large […]

Read more
CHAT