Security Hardening

Debian 13 — netplan.io — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — netplan.io — 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-2022-4968 Upstream summary: netplan leaks the private key of wireguard to local users. Versions after 1.0 are not affected. Table of contents Symptom & Impact Environment & Reproduction Root […]

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

Debian 12 — rc — 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-2014-1936 Upstream summary: rc before 1.7.1-5 insecurely creates temporary files. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Debian 11 — cinder — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — cinder — multiple vulnerabilities (13 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-2013-1068 CVE-2013-1664 CVE-2013-4183 CVE-2013-4202 CVE-2014-3641 CVE-2014-7230 CVE-2015-1851 CVE-2015-5162  +5 more Upstream summary: The OpenStack Nova (python-nova) package 1:2013.2.3-0 before 1:2013.2.3-0ubuntu1.2 and 1:2014.1-0 before 1:2014.1-0ubuntu1.2 and Openstack Cinder (python-cinder) […]

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

Debian 11 — sword — 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-2005-0015 CVE-2008-0932 Upstream summary: diatheke.pl in Sword 1.5.7a allows remote attackers to execute arbitrary commands via shell metacharacters in a URL. Table of contents Symptom & Impact Environment […]

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Debian 12 — prosody — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — prosody — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2205 CVE-2011-2531 CVE-2011-2532 CVE-2014-2744 CVE-2014-2745 CVE-2016-0756 CVE-2016-1231 CVE-2016-1232  +12 more Upstream summary: Prosody before 0.8.1 does not properly detect recursion during entity expansion, which allows remote attackers to […]

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Debian 13 — derby — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — derby — multiple vulnerabilities (3 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-2015-1832 CVE-2018-1313 CVE-2022-46337 Upstream summary: XML external entity (XXE) vulnerability in the SqlXmlUtil code in Apache Derby before 10.12.1.1, when a Java Security Manager is not in place, […]

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Debian 9 — python-pysaml2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — python-pysaml2 — 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-2020-5390 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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Debian 11 — unrtf — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — unrtf — 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-2004-1297 CVE-2014-9274 CVE-2014-9275 CVE-2016-10091 CVE-2025-65410 CVE-2025-65411 Upstream summary: Buffer overflow in the process_font_table function in convert.c for unrtf 0.19.3 allows remote attackers to execute arbitrary code via a […]

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

Debian 12 — bsh — 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-2016-2510 Upstream summary: BeanShell (bsh) before 2.0b6, when included on the classpath by an application that uses Java serialization or XStream, allows remote attackers to execute arbitrary code […]

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