Security Hardening

Debian 11 — fex — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — fex — multiple vulnerabilities (7 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-2011-1409 CVE-2012-0869 CVE-2012-1293 CVE-2014-3875 CVE-2014-3876 CVE-2014-3877 CVE-2020-15591 Upstream summary: Frams's Fast File EXchange (F*EX, aka fex) 20100208, and possibly other versions before 20110610, allows remote attackers to bypass […]

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

Debian 12 — linkchecker — 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-2013-2099 Upstream summary: Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows […]

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

Debian 13 — loggerhead — 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-2011-0728 Upstream summary: Cross-site scripting (XSS) vulnerability in templatefunctions.py in Loggerhead before 1.18.1 allows remote authenticated users to inject arbitrary web script or HTML via a filename, which […]

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Debian 11 — python-django-channels — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-django-channels — 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-2020-35681 Upstream summary: Django Channels 3.x before 3.0.3 allows remote attackers to obtain sensitive information from a different request scope. The legacy channels.http.AsgiHandler class, used for handling HTTP […]

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

Debian 13 — speex — 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-2008-1686 CVE-2020-23903 Upstream summary: Array index vulnerability in Speex 1.1.12 and earlier, as used in libfishsound 0.9.0 and earlier, including Illiminable DirectShow Filters and Annodex Plugins for Firefox, […]

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

Debian 13 — node-min-document — 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-2025-57352 Upstream summary: A vulnerability exists in the 'min-document' package prior to version 2.19.0, stemming from improper handling of namespace operations in the removeAttributeNS method. By processing malicious input […]

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

Debian 13 — coreboot — 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-2022-29264 Upstream summary: An issue was discovered in coreboot 4.13 through 4.16. On APs, arbitrary code execution in SMM may occur. Table of contents Symptom & Impact Environment & […]

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Debian 13 — golang-github-gin-gonic-gin — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — golang-github-gin-gonic-gin — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-28483 CVE-2020-36567 CVE-2023-26125 CVE-2023-29401 Upstream summary: This affects all versions of package github.com/gin-gonic/gin. When gin is exposed directly to the internet, a client's IP can be spoofed by […]

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Debian 9 — freeimage — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — freeimage — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-12211 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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