Security Hardening

Debian 13 — nagios4 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — nagios4 — multiple vulnerabilities (6 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-2018-13441 CVE-2018-13457 CVE-2018-13458 CVE-2018-18245 CVE-2020-13977 CVE-2020-35269 Upstream summary: qh_help in Nagios Core version 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attacker to […]

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

Debian 13 — spdlog — 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-2025-6140 Upstream summary: A vulnerability, which was classified as problematic, was found in spdlog up to 1.15.1. This affects the function scoped_padder in the library include/spdlog/pattern_formatter-inl.h. The manipulation leads […]

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Debian 12 — requests — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — requests — multiple vulnerabilities (8 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-2014-1829 CVE-2014-1830 CVE-2015-2296 CVE-2018-18074 CVE-2023-32681 CVE-2024-35195 CVE-2024-47081 CVE-2026-25645 Upstream summary: Requests (aka python-requests) before 2.3.0 allows remote servers to obtain a netrc password by reading the Authorization header […]

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

Debian 13 — optee-os — 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-2021-36133 CVE-2025-46733 CVE-2026-33317 CVE-2026-33662 Upstream summary: The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the […]

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Debian 12 — libapache-poi-java — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libapache-poi-java — multiple vulnerabilities (8 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-2014-3529 CVE-2014-3574 CVE-2014-9527 CVE-2016-5000 CVE-2017-12626 CVE-2017-5644 CVE-2019-12415 CVE-2025-31672 Upstream summary: The OPC SAX setup in Apache POI before 3.10.1 allows remote attackers to read arbitrary files via an […]

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

Debian 13 — etherape — 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-2011-3369 Upstream summary: The add_conversation function in conversations.c in EtherApe before 0.9.12 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via […]

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Debian 13 — protobuf-c — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — protobuf-c — multiple vulnerabilities (2 CVEs) — 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-2022-33070 CVE-2022-48468 Upstream summary: Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial […]

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Debian 13 — python-oslo.privsep — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — python-oslo.privsep — 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-2022-38065 Upstream summary: A privilege escalation vulnerability exists in the oslo.privsep functionality of OpenStack git master 05194e7618 and prior. Overly permissive functionality within tools leveraging this library within a […]

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

Debian 12 — rdesktop — 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-2008-1801 CVE-2008-1802 CVE-2008-1803 CVE-2011-1595 CVE-2018-20174 CVE-2018-20175 CVE-2018-20176 CVE-2018-20177  +12 more Upstream summary: Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote attackers to cause a […]

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CHAT