Security Hardening

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

Debian 12 — lxdm — 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-2015-8308 Upstream summary: LXDM before 0.5.2 did not start X server with -auth, which allows local users to bypass authentication with X connections. Table of contents Symptom & […]

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Debian 11 — libksba — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libksba — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-5111 CVE-2014-9087 CVE-2016-4353 CVE-2016-4354 CVE-2016-4355 CVE-2016-4356 CVE-2016-4574 CVE-2016-4579  +2 more Upstream summary: The libksba library 0.9.12 and possibly other versions, as used by gpgsm in the newpg package […]

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

Debian 13 — libntlm — 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-2019-17455 Upstream summary: Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in […]

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Debian 12 — gedit — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gedit — multiple vulnerabilities (3 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-2005-1686 CVE-2009-0314 CVE-2017-14108 Upstream summary: Format string vulnerability in gedit 2.10.2 may allow attackers to cause a denial of service (application crash) via a bin file with format […]

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

Debian 11 — libxvmc — 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-2013-1990 CVE-2013-1999 CVE-2016-7953 Upstream summary: Multiple integer overflows in X.org libXvMC 1.0.7 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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Debian 11 — libdata-formvalidator-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libdata-formvalidator-perl — 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-2011-2201 Upstream summary: The Data::FormValidator module 4.66 and earlier for Perl, when untaint_all_constraints is enabled, does not properly preserve the taint attribute of data, which might allow remote […]

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

Debian 13 — tryton-sao — 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-2020-37014 CVE-2025-66420 CVE-2025-66421 Upstream summary: Tryton 5.4 contains a persistent cross-site scripting vulnerability in the user profile name input that allows remote attackers to inject malicious scripts. Attackers […]

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Debian 11 — golang-github-go-macaron-csrf — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-github-go-macaron-csrf — 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-2018-25060 Upstream summary: A vulnerability was found in Macaron csrf and classified as problematic. Affected by this issue is some unknown functionality of the file csrf.go. The manipulation […]

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Debian 12 — python-jwcrypto — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — python-jwcrypto — multiple vulnerabilities (4 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-2016-6298 CVE-2023-6681 CVE-2024-28102 CVE-2026-39373 Upstream summary: The _Rsa15 class in the RSA 1.5 algorithm implementation in jwa.py in jwcrypto before 0.3.2 lacks the Random Filling protection mechanism, which […]

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