Security Hardening

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

Debian 12 — velocity — 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-2020-13936 Upstream summary: An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary system commands with the same privileges as the […]

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

Debian 13 — archvsync — 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-2017-8805 Upstream summary: Debian ftpsync before 20171017 does not use the rsync –safe-links option, which allows remote attackers to conduct directory traversal attacks via a crafted upstream mirror. Table […]

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

Debian 9 — davical — 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-2019-18345 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 12 — guzzle — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — guzzle — multiple vulnerabilities (5 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-2022-29248 CVE-2022-31042 CVE-2022-31043 CVE-2022-31090 CVE-2022-31091 Upstream summary: Guzzle is a PHP HTTP client. Guzzle prior to versions 6.5.6 and 7.4.3 contains a vulnerability with the cookie middleware. The […]

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

Debian 13 — zutty — 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-2022-41138 Upstream summary: In Zutty before 0.13, DECRQSS in text written to the terminal can achieve arbitrary code execution. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Debian 13 — docopt.cpp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — docopt.cpp — 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-2025-67125 Upstream summary: A signed integer overflow in docopt.cpp v0.6.2 (LeafPattern::match in docopt_private.h) when merging occurrence counters (e.g., default LONG_MAX + first user "-v/–verbose") can cause counter wrap (negative/unbounded […]

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

Debian 11 — breezy — 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-2017-14176 Upstream summary: Bazaar through 2.7.0, when Subprocess SSH is used, allows remote attackers to execute arbitrary commands via a bzr+ssh URL with an initial dash character in […]

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Debian 11 — prosody-modules — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — prosody-modules — 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-2020-8086 Upstream summary: The mod_auth_ldap and mod_auth_ldap2 Community Modules through 2020-01-27 for Prosody incompletely verify the XMPP address passed to the is_admin() function. This grants remote entities admin-only […]

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Debian 11 — wordpress-shibboleth — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — wordpress-shibboleth — 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-2017-14313 Upstream summary: The shibboleth_login_form function in shibboleth.php in the Shibboleth plugin before 1.8 for WordPress is prone to an XSS vulnerability due to improper use of add_query_arg(). […]

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

Debian 11 — rlpr — 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-2004-0393 CVE-2004-0454 Upstream summary: Format string vulnerability in the msg function for rlpr daemon (rlprd) 2.0.4 allows remote attackers to execute arbitrary code via format string specifiers in […]

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