Linux

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

Debian 12 — rhino — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-66453 Upstream summary: Rhino is an open-source implementation of JavaScript written entirely in Java. Prior to 1.8.1, 1.7.15.1, and 1.7.14.1, when an application passed an attacker controlled float […]

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How to Configure PostgreSQL Remote Access and SSL on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure PostgreSQL Remote Access and SSL on RHEL 9

By default, PostgreSQL only accepts connections from localhost using peer or ident authentication. Enabling remote access requires two configuration changes: editing postgresql.conf to listen on a network interface, and editing pg_hba.conf to permit remote connections from specific hosts or subnets. Beyond network access, encrypting the connection with SSL/TLS is essential for any deployment where database […]

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Debian 13 — jbig2enc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jbig2enc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-11230 CVE-2023-46362 CVE-2023-46363 Upstream summary: jbig2_add_page in jbig2enc.cc in libjbig2enc.a in jbig2enc 0.29 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other […]

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Alpine Linux 3.20 — py3-babel — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — py3-babel — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 2.9.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — py3-babel 2.9.1-r0 Related CVEs: CVE-2021-42771 Upstream summary: Alpine main repository for vv3.20 ships py3-babel 2.9.1-r0 which addresses CVE-2021-42771. Table of contents Symptom & Impact Environment […]

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Debian 13 — xmlgraphics-commons — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — xmlgraphics-commons — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-11988 Upstream summary: Apache XmlGraphics Commons 2.4 and earlier is vulnerable to server-side request forgery, caused by improper input validation by the XMPParser. By using a specially-crafted argument, an […]

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SLES 16 — gpgme — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — gpgme — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2014:1073-1 (see also SUSE bugzilla) Related CVEs: CVE-2014-3564 Upstream summary: Multiple heap-based buffer overflows in the status_handler function in (1) engine-gpgsm.c and (2) engine-uiserver.c in GPGME before 1.5.1 allow remote attackers to […]

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Common Problems 113961

RHEL 10 – sshd fails to start due to invalid sshd_config directives – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 November 2025 Affected versions: RHEL 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Alpine Linux 3.20 — singularity — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — singularity — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 4.1.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — singularity 4.1.1-r0 Related CVEs: CVE-2024-23650 CVE-2024-23651 CVE-2024-23652 CVE-2024-23653 CVE-2021-41190 GHSA-77vh-xpmg-72qh CVE-2021-32635 CVE-2021-29136  +7 more Upstream summary: Alpine community repository for vv3.20 ships singularity 4.1.1-r0 which […]

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How to Secure MySQL: Remove Root Remote Login, audit_log on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Secure MySQL: Remove Root Remote Login, audit_log on RHEL 9

A default MySQL installation has several security weaknesses: a root account that may be accessible remotely, anonymous user accounts, a test database anyone can access, and no audit logging of who accessed what data. Securing MySQL is essential before any production deployment and covers four main areas: access control (who can connect from where), authentication […]

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SLES 16 — perl-HTTP-Daemon — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — perl-HTTP-Daemon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:2872-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-31081 Upstream summary: HTTP::Daemon is a simple http server class written in perl. Versions prior to 6.15 are subject to a vulnerability which could potentially […]

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