Debian 11

Common Problems 120684

Debian 11: Nginx serves incomplete TLS certificate chain

🟠 High   ⏱ 5–30 min  Last verified: 12 October 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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Debian 11 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1438 CVE-2013-1439 CVE-2013-2126 CVE-2015-3885 CVE-2015-8366 CVE-2015-8367 CVE-2018-25017 Upstream summary: Unspecified vulnerability in dcraw 0.8.x through 0.8.9, as used in libraw, ufraw, shotwell, and other products, allows context-dependent attackers […]

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Debian 11 — unzip — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — unzip — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0282 CVE-2005-0602 CVE-2005-2475 CVE-2005-4667 CVE-2008-0888 CVE-2014-8139 CVE-2014-8140 CVE-2014-8141  +11 more Upstream summary: Directory traversal vulnerability in UnZip 5.50 allows attackers to overwrite arbitrary files via invalid characters between […]

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

Debian 11 — mozc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-4509 Upstream summary: The default configuration of IBUS 1.5.4, and possibly 1.5.2 and earlier, when IBus.InputPurpose.PASSWORD is not set and used with GNOME 3, does not obscure the […]

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Debian 11 — pam-shield — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pam-shield — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2350 Upstream summary: pam_shield before 0.9.4: Default configuration does not perform protective action Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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How to Install and Configure Squid Proxy on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on Debian 11

Introduction Deploying install and configure squid proxy 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 Before […]

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Debian 11 — x11-apps — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — x11-apps — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2504 Upstream summary: Untrusted search path vulnerability in x11perfcomp in XFree86 x11perf before 1.5.4 allows local users to gain privileges via unspecified Trojan horse code in the current […]

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Debian 11 — mp4h — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mp4h — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3736 Upstream summary: ltdl.c in libltdl in GNU Libtool 1.5.x, and 2.2.6 before 2.2.6b, as used in Ham Radio Control Libraries, Q, and possibly other products, attempts to […]

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Debian 11 — usemod-wiki — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — usemod-wiki — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1397 Upstream summary: Cross-site scripting (XSS) vulnerability in UseModWiki 1.0 allows remote attackers to inject arbitrary web script or HTML via an argument to wiki.pl. Table of contents […]

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

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

🟡 Medium   ⏱ 10–30 min  Last verified: 11 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1697 CVE-2002-1746 CVE-2002-1747 Upstream summary: Electronic Code Book (ECB) mode in VTun 2.0 through 2.5 uses a weak encryption algorithm that produces the same ciphertext from the same […]

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