Security Hardening

Debian 13 — log4net — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — log4net — 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-2018-1285 CVE-2026-40021 Upstream summary: Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks in applications that […]

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Debian 12 — cfrpki — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — cfrpki — multiple vulnerabilities (11 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-2021-3761 CVE-2021-3907 CVE-2021-3908 CVE-2021-3909 CVE-2021-3910 CVE-2021-3911 CVE-2021-3912 CVE-2021-3978  +3 more Upstream summary: Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid […]

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Debian 10 — keystone — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — keystone — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12689 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 13 — dns2tcp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — dns2tcp — 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-2008-3910 Upstream summary: dns2tcp before 0.4.1 does not properly handle negative values in a certain length field in the input argument to the (1) dns_simple_decode or (2) dns_decode […]

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

Debian 13 — kvirc — 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-2007-2951 CVE-2010-2451 CVE-2010-2452 CVE-2010-2785 Upstream summary: The parseIrcUrl function in src/kvirc/kernel/kvi_ircurl.cpp in KVIrc 3.2.0 allows user-assisted remote attackers to execute arbitrary commands via shell metacharacters in an (1) […]

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Debian 13 — rust-astral-tokio-tar — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — rust-astral-tokio-tar — 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-2025-59825 CVE-2025-62518 CVE-2026-32766 Upstream summary: astral-tokio-tar is a tar archive reading/writing library for async Rust. In versions 0.5.3 and earlier of astral-tokio-tar, tar archives may extract outside of […]

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

Debian 12 — openblas — 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-2021-4048 Upstream summary: An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used in OpenBLAS before […]

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

Debian 13 — plait — 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-2008-4085 Upstream summary: plaiter in Plait before 1.6 allows local users to overwrite arbitrary files via a symlink attack on (1) cut.$$, (2) head.$$, (3) awk.$$, and (4) […]

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Debian 11 — netsurf — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — netsurf — multiple vulnerabilities (9 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-2012-0844 CVE-2014-3566 CVE-2015-7505 CVE-2015-7506 CVE-2015-7507 CVE-2015-7508 CVE-2024-51317 CVE-2025-29699  +1 more Upstream summary: Information-disclosure vulnerability in Netsurf through 2.8 due to a world-readable cookie jar. Table of contents Symptom […]

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