Common Problems

Common Problems 114565

RHEL 9: Swap Not Activated at Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 2022 📖 ~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 & Cross-Refs References & Further […]

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Debian 11 — tcp-wrappers — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tcp-wrappers — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-4601 Upstream summary: A regression error in tcp-wrappers 7.6.dbs-10 and 7.6.dbs-11 might allow remote attackers to bypass intended access restrictions when a service uses libwrap but does not […]

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

Debian 11 — razor — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-2024 Upstream summary: Vipul Razor Agents (razor-agents) before 2.70 allows remote attackers to cause a denial of service via (1) certain "unusual HTML messages" or (2) "certain malformed […]

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Debian 11 — libcgi-pm-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libcgi-pm-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-2761 CVE-2010-4410 CVE-2010-4411 CVE-2012-5526 Upstream summary: The multipart_init function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple 1.112 and earlier uses a hardcoded value of the […]

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Common Problems 111799

Windows Server 2022 — Firewall Rules Present but Inbound Application Traffic Still Blocked — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 2022 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact Applications remain unreachable despite visible allow rules in Windows Defender Firewall. Teams assume network outage while […]

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Debian 11 — ruby-openid — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-openid — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1812 CVE-2019-11027 Upstream summary: The ruby-openid gem before 2.2.2 for Ruby allows remote OpenID providers to cause a denial of service (CPU consumption) via (1) a large XRDS […]

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Debian 11 — libgoogle-gson-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libgoogle-gson-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-25647 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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AlmaLinux 9 — lua — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — lua — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:0957 Related CVEs: CVE-2021-43519 CVE-2021-44964 CVE-2022-33099 CVE-2022-28805 Upstream summary: The lua packages provide support for Lua, a powerful light-weight programming language designed for extending applications. Lua is also frequently used as a […]

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Debian 11 — pidgin-otr — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pidgin-otr — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2369 CVE-2015-8833 Upstream summary: Format string vulnerability in the log_message_cb function in otr-plugin.c in the Off-the-Record Messaging (OTR) pidgin-otr plugin before 3.2.1 for Pidgin might allow remote attackers […]

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CentOS Stream 9 — file — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — file — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2022 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2024:2512 Related CVEs: CVE-2022-48554 Upstream summary: The file command is used to identify a particular file according to the type of data the file contains. It can identify many different file […]

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