Security Hardening

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

Debian 11 — bzflag — 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-2005-4584 Upstream summary: BZFlag server 2.0.4 and earlier allows remote attackers to cause a denial of service (application crash) via a callsign that is not followed by a […]

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Debian 11 — mojarra — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mojarra — multiple vulnerabilities (4 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-2010-2087 CVE-2011-4358 CVE-2012-2672 CVE-2013-5855 Upstream summary: Oracle Mojarra 1.2_14 and 2.0.2, as used in IBM WebSphere Application Server, Caucho Resin, and other applications, does not properly handle an […]

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

Debian 13 — oar — 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-2016-1235 Upstream summary: The oarsh script in OAR before 2.5.7 allows remote authenticated users of a cluster to obtain sensitive information and possibly gain privileges via vectors related to […]

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Debian 12 — async-http-client — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — async-http-client — 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-2013-7397 CVE-2024-53990 CVE-2026-40490 Upstream summary: Async Http Client (aka AHC or async-http-client) before 1.9.0 skips X.509 certificate verification unless both a keyStore location and a trustStore location are […]

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

Debian 12 — tla — 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-2009-3560 CVE-2009-3720 Upstream summary: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a […]

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Debian 13 — libitext-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libitext-java — 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-2021-37819 Upstream summary: PDF Labs pdftk-java v3.2.3 was discovered to contain an infinite loop via the component /text/pdf/PdfReader.java. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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

Debian 12 — pdns — 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-2005-0038 CVE-2005-0428 CVE-2005-2301 CVE-2005-2302 CVE-2006-4251 CVE-2008-3337 CVE-2008-5277 CVE-2012-0206  +12 more Upstream summary: The DNS implementation of PowerDNS 2.9.16 and earlier allows remote attackers to cause a denial of […]

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Debian 11 — libcgi-simple-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libcgi-simple-perl — multiple vulnerabilities (4 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-2010-2761 CVE-2010-4410 CVE-2010-4411 CVE-2025-40927 Upstream summary: The multipart_init function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple 1.112 and earlier uses a hardcoded value of the […]

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Debian 11 — uw-imap — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — uw-imap — multiple vulnerabilities (8 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-2002-1782 CVE-2003-0297 CVE-2005-0198 CVE-2005-2933 CVE-2008-5005 CVE-2008-5006 CVE-2008-5514 CVE-2018-19518 Upstream summary: The default configuration of University of Washington IMAP daemon (wu-imapd), when running on a system that does not […]

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

Debian 13 — psi — 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-2008-6393 Upstream summary: PSI Jabber client before 0.12.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a file transfer request […]

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