Introduction This guide explains how to Install and Configure Fail2ban 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 […]
🟡 Medium ⏱ 10–30 min Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2018-13863 CVE-2019-2391 CVE-2020-7610 CVE-2021-32050 Upstream summary: The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regular Expression Denial […]
🟠 High ⏱ 15–60 min Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2011-5036 CVE-2012-6109 CVE-2013-0183 CVE-2013-0184 CVE-2013-0262 CVE-2013-0263 CVE-2015-3225 CVE-2018-16471 +12 more Upstream summary: Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters […]
🟢 Low ⏱ 5–15 min Last verified: 19 October 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5257-2 Related CVEs: CVE-2020-19860 CVE-2020-19861 Upstream summary: USN-5257-1 fixed several vulnerabilities in ldns. This update provides the corresponding update for Ubuntu 20.04 ESM and Ubuntu 22.04 ESM. Original advisory details: […]
🟡 Medium ⏱ 5–30 min Last verified: 18 October 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 […]
🟡 Medium ⏱ 5–30 min Last verified: 18 October 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 […]
🟡 Medium ⏱ 10–30 min Last verified: 18 October 2022 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: chrony <= 3.5.1 data corruption through symlink vulnerability writing the pidfile Related CVEs: CVE-2015-1821 CVE-2015-1822 CVE-2015-1853 CVE-2020-14367 Upstream summary: Miroslav Lichvar reports: chrony-3.5.1 […] fixes a security issue in writing […]
Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up centralized logging with syslogd on IBM AIX […]
🟢 Low ⏱ 5–15 min Last verified: 18 October 2022 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: py-httpx — input validation vulnerability Related CVEs: CVE-2021-41945 Upstream summary: lebr0nli reports: Encode OSS httpx <=1.0.0.beta0 is affected by improper input validation in `httpx.URL`, `httpx.Client` and some functions using `httpx.URL.copy_with`. […]
🟢 Low ⏱ 5–15 min Last verified: 18 October 2022 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: py-markdown2 — regular expression denial of service vulnerability Related CVEs: CVE-2020-11888 CVE-2021-26813 Upstream summary: Ben Caller reports: markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of […]
