Security Hardening

Debian 13 — jython — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jython — multiple vulnerabilities (11 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-2013-2027 CVE-2016-4000 CVE-2017-17522 CVE-2019-16935 CVE-2025-12084 CVE-2025-15366 CVE-2025-15367 CVE-2025-6069  +3 more Upstream summary: Jython 2.2.1 uses the current umask to set the privileges of the class cache files, which […]

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Debian 12 — libcoap3 — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libcoap3 — multiple vulnerabilities (15 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-2023-30362 CVE-2024-31031 CVE-2024-46304 CVE-2025-34468 CVE-2025-59391 CVE-2025-65493 CVE-2025-65494 CVE-2025-65495  +7 more Upstream summary: Buffer Overflow vulnerability in coap_send function in libcoap library 4.3.1-103-g52cfd56 fixed in 4.3.1-120-ge242200 allows attackers to […]

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

Debian 11 — libphp-snoopy — 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-2008-4796 CVE-2008-7313 CVE-2014-5008 Upstream summary: The _httpsrequest function (Snoopy/Snoopy.class.php) in Snoopy 1.2.3 and earlier, as used in (1) ampache, (2) libphp-snoopy, (3) mahara, (4) mediamate, (5) opendb, (6) […]

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Debian 11 — t-prot — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — t-prot — 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-2009-4404 Upstream summary: Unspecified vulnerability in t-prot (TOFU Protection) before 2.8 allows remote attackers to cause a denial of service via unspecified vectors related to the "–maxlines" option […]

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Debian 11 — ldap-git-backup — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ldap-git-backup — 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-2013-1425 Upstream summary: ldap-git-backup before 1.0.4 exposes password hashes due to incorrect directory permissions. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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

Debian 13 — hnswlib — 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-2023-37365 Upstream summary: Hnswlib 0.7.0 has a double free in init_index when the M argument is a large integer. Table of contents Symptom & Impact Environment & Reproduction Root […]

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

Debian 13 — xmp — 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-2007-6731 CVE-2007-6732 CVE-2013-1980 Upstream summary: Extended Module Player (XMP) 2.5.1 and earlier allow remote attackers to execute arbitrary code via an OXM file with a negative value, which […]

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

Debian 12 — libffi — 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-2017-1000376 Upstream summary: libffi requests an executable stack allowing attackers to more easily trigger arbitrary code execution by overwriting the stack. Please note that libffi is used by […]

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

Debian 11 — remctl — 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-2018-0493 Upstream summary: remctld in remctl before 3.14, when an attacker is authorized to execute a command that uses the sudo option, has a use-after-free that leads to […]

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Debian 13 — mqtt-client — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — mqtt-client — 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-2019-0222 Upstream summary: In Apache ActiveMQ 5.0.0 – 5.15.8, unmarshalling corrupt MQTT frame can lead to broker Out of Memory exception making it unresponsive. Table of contents Symptom & […]

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CHAT