Security Hardening

Debian 12 — emacs-jabber — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — emacs-jabber — 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-2008-4952 Upstream summary: emacs-jabber in emacs-jabber 0.7.91 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/*.log temporary file. Table of contents Symptom & […]

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Debian 11 — libitext1-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libitext1-java — 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-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 […]

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

Debian 13 — clementine — 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-2018-14332 CVE-2021-40826 CVE-2021-40827 Upstream summary: An issue was discovered in Clementine Music Player 1.3.1. Clementine.exe is vulnerable to a user mode write access violation due to a NULL […]

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Debian 11 — ruby-css-parser — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-css-parser — 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-2026-44312 Upstream summary: css_parser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle (MITM) attacker […]

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

Debian 12 — byzanz — 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-2015-2785 Upstream summary: The GIF encoder in Byzanz allows remote attackers to cause a denial of service (out-of-bounds heap write and crash) or possibly execute arbitrary code via […]

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Debian 11 — libwww-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libwww-perl — multiple vulnerabilities (3 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-2010-2253 CVE-2011-0633 CVE-2026-8368 Upstream summary: lwp-download in libwww-perl before 5.835 does not reject downloads to filenames that begin with a . (dot) character, which allows remote servers to […]

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

Debian 11 — procps — 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-2018-1122 CVE-2018-1123 CVE-2018-1124 CVE-2018-1125 CVE-2018-1126 CVE-2023-4016 Upstream summary: procps-ng before version 3.3.15 is vulnerable to a local privilege escalation in top. If a user runs top with HOME […]

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

Debian 11 — linkchecker — 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-2013-2099 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 — xrdp — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — xrdp — multiple vulnerabilities (20 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-2008-5902 CVE-2008-5903 CVE-2008-5904 CVE-2013-1430 CVE-2017-16927 CVE-2017-6967 CVE-2020-4044 CVE-2022-23468  +12 more Upstream summary: Buffer overflow in the xrdp_bitmap_invalidate function in xrdp/xrdp_bitmap.c in xrdp 0.4.1 and earlier allows remote attackers […]

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