Debian 11

Debian 11 — libpng1.6 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libpng1.6 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-7353 CVE-2013-7354 CVE-2014-0333 CVE-2014-9495 CVE-2015-0973 CVE-2015-8472 CVE-2016-10087 CVE-2017-12652  +12 more Upstream summary: Integer overflow in the png_set_unknown_chunks function in libpng/pngset.c in libpng before 1.5.14beta08 allows context-dependent attackers to […]

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How to Set Up Uptime Kuma Monitoring on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Uptime Kuma Monitoring on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up set up uptime kuma monitoring on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully […]

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Debian 11 — rust-nix — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rust-nix — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-45707 Upstream summary: An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an […]

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Debian 11 — tangerine — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tangerine — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-3381 Upstream summary: The (1) tangerine and (2) tangerine-properties scripts in Tangerine 0.3.2.2 place a zero-length directory name in the LD_LIBRARY_PATH, which allows local users to gain privileges […]

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Debian 11 — sng — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — sng — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-6398 Upstream summary: sng_regress in SNG 1.0.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/recompiled$$.png, (2) /tmp/decompiled$$.sng, and (3) /tmp/canonicalized$$.sng temporary […]

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How to Configure cAdvisor Container Metrics on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure cAdvisor Container Metrics on Debian 11

Introduction This guide explains how to Configure cAdvisor Container Metrics 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 […]

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Common Problems 120608

Debian 11 – time synchronization fails causing TLS and auth errors

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2022 Affected versions: Debian 11 📖 ~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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How to Configure the System Timezone on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure the System Timezone on Debian 11

Introduction Deploying configure the system timezone on debian 11 on a Debian 11 Bullseye 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. Prerequisites You will […]

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Debian 11 — aview — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — aview — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4935 Upstream summary: asciiview in aview 1.3.0 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/aview#####.pgm temporary file. Table of contents Symptom & […]

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Debian 11 — httrack — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — httrack — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-3429 Upstream summary: Buffer overflow in URI processing in HTTrack and WinHTTrack before 3.42-3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary […]

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