Security Hardening

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

Debian 11 — qbittorrent — multiple vulnerabilities (6 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-2017-6503 CVE-2017-6504 CVE-2019-13640 CVE-2023-30801 CVE-2024-51774 CVE-2025-54310 Upstream summary: WebUI in qBittorrent before 3.3.11 did not escape many values, which could potentially lead to XSS. Table of contents Symptom […]

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

Debian 11 — hawtjni — 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-2013-2035 Upstream summary: Race condition in hawtjni-runtime/src/main/java/org/fusesource/hawtjni/runtime/Library.java in HawtJNI before 1.8, when a custom library path is not specified, allows local users to execute arbitrary Java code by […]

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Debian 12 — libmobi — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libmobi — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-1533 CVE-2022-1534 CVE-2022-1907 CVE-2022-1908 CVE-2022-1987 CVE-2022-2279 CVE-2022-29788 Upstream summary: Buffer Over-read in GitHub repository bfabiszewski/libmobi prior to 0.11. This vulnerability is capable of arbitrary code execution. Table of […]

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Debian 13 — xscreensaver — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — xscreensaver — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0885 CVE-2003-1294 CVE-2003-1295 CVE-2004-2655 CVE-2007-1859 CVE-2007-5585 CVE-2011-2187 CVE-2015-8025  +2 more Upstream summary: Xscreensaver 4.14 contains certain debugging code that should have been omitted, which causes Xscreensaver to create […]

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

Debian 11 — libconfuse — 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-2022-40320 Upstream summary: cfg_tilde_expand in confuse.c in libConfuse 3.3 has a heap-based buffer over-read. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Debian 12 — vtun — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — vtun — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~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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Debian 11 — slrn — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — slrn — 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-2002-0740 Upstream summary: Buffer overflow in slrnpull for the SLRN package, when installed setuid or setgid, allows local users to gain privileges via a long -d (SPOOLDIR) argument. […]

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Debian 13 — node-flatted — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — node-flatted — multiple vulnerabilities (2 CVEs) — 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-2026-32141 CVE-2026-33228 Upstream summary: flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse() function uses a recursive revive() phase to resolve circular references in deserialized JSON. […]

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