Security Hardening

Debian 13 — jzlib — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jzlib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-2102 Upstream summary: InfBlocks.java in JCraft JZlib before 0.0.7 allow remote attackers to cause a denial of service (NullPointerException) via an invalid block of deflated data. Table of […]

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Debian 11 — parallel — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — parallel — multiple vulnerabilities (2 CVEs) — 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-2015-4155 CVE-2015-4156 Upstream summary: GNU Parallel before 20150422, when using (1) –pipe, (2) –tmux, (3) –cat, (4) –fifo, or (5) –compress, allows local users to write to arbitrary […]

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Debian 12 — libui-dialog-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libui-dialog-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-7315 Upstream summary: UI-Dialog 1.09 and earlier allows remote attackers to execute arbitrary commands. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Debian 11 — python-flask-cors — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-flask-cors — multiple vulnerabilities (5 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-2020-25032 CVE-2024-1681 CVE-2024-6839 CVE-2024-6844 CVE-2024-6866 Upstream summary: An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private […]

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Debian 12 — htdig — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — htdig — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0085 CVE-2007-6110 Upstream summary: Cross-site scripting (XSS) vulnerability in ht://dig (htdig) before 3.1.6-r7 allows remote attackers to execute arbitrary web script or HTML via the config parameter, which […]

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

Debian 11 — libgclib — 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-2021-42006 Upstream summary: An out-of-bounds access in GffLine::GffLine in gff.cpp in GCLib 0.12.7 allows an attacker to cause a segmentation fault or possibly have unspecified other impact via […]

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Debian 13 — node-thenify — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — node-thenify — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-7677 Upstream summary: This affects the package thenify before 3.3.1. The name argument provided to the package can be controlled by users without any sanitization, and this is provided […]

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Debian 11 — transmission — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — transmission — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1757 CVE-2010-0012 CVE-2010-0748 CVE-2010-0749 CVE-2010-1853 CVE-2012-4037 CVE-2012-6129 CVE-2014-4909  +2 more Upstream summary: Cross-site request forgery (CSRF) vulnerability in Transmission 1.5 before 1.53 and 1.6 before 1.61 allows remote […]

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Debian 12 — libmatroska — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libmatroska — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-8792 Upstream summary: The KaxInternalBlock::ReadData function in libMatroska before 1.4.4 allows context-dependent attackers to obtain sensitive information from process heap memory via crafted EBML lacing, which triggers an […]

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