Security Hardening

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

Debian 11 — alpine — 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-2008-5514 CVE-2020-14929 CVE-2021-38370 CVE-2021-46853 Upstream summary: Off-by-one error in the rfc822_output_char function in the RFC822BUFFER routines in the University of Washington (UW) c-client library, as used by the […]

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Debian 13 — opensaml — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — opensaml — 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-2009-3474 CVE-2009-3475 CVE-2009-3476 CVE-2025-31335 Upstream summary: OpenSAML 2.x before 2.2.1 and XMLTooling 1.x before 1.2.1, as used by Internet2 Shibboleth Service Provider 2.x before 2.2.1, do not follow […]

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Debian 12 — libpoe-component-irc-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libpoe-component-irc-perl — 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-2010-3438 Upstream summary: libpoe-component-irc-perl before v6.32 does not remove carriage returns and line feeds. This can be used to execute arbitrary IRC commands by passing an argument such […]

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Debian 11 — puppet-module-puppetlabs-stdlib — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — puppet-module-puppetlabs-stdlib — 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-2015-1029 Upstream summary: The puppetlabs-stdlib module 2.1 through 3.0 and 4.1.0 through 4.5.x before 4.5.1 for Puppet 2.8.8 and earlier allows remote authenticated users to gain privileges or […]

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Debian 12 — python-babel — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — python-babel — 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-2021-42771 Upstream summary: Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to code execution. Table […]

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

Debian 13 — xastir — 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-2008-4987 Upstream summary: xastir 1.9.2 allows local users to overwrite arbitrary files via a symlink attack on the (a) /tmp/ldconfig.tmp, (b) /tmp/ldconf.tmp, and (c) /tmp/ld.so.conf temporary files, related […]

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

Debian 12 — gmp — 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-2021-43618 Upstream summary: GNU Multiple Precision Arithmetic Library (GMP) through 6.2.1 has an mpz/inp_raw.c integer overflow and resultant buffer overflow via crafted input, leading to a segmentation fault […]

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Debian 12 — node-bn.js — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — node-bn.js — 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-2026-2739 Upstream summary: This affects versions of the package bn.js before 5.2.3. Calling maskn(0) on any BN instance corrupts the internal state, causing toString(), divmod(), and other methods […]

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

Debian 11 — qutebrowser — 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-2018-1000559 CVE-2018-10895 CVE-2020-11054 Upstream summary: qutebrowser version introduced in v0.11.0 (1179ee7a937fb31414d77d9970bac21095358449) contains a Cross Site Scripting (XSS) vulnerability in history command, qute://history page that can result in Via […]

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