Common Problems

Common Problems 111709

Windows Server 2022 — RDP Fails with NLA Error After Certificate Renewal — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 October 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 Remote Desktop sessions fail before credential prompt with NLA or authentication package errors. Administrative access is […]

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Debian 11 — plexus-archiver — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — plexus-archiver — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1002200 Upstream summary: plexus-archiver before 3.6.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in an archive entry […]

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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: 19 October 2022 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 11 — python-fedora — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-fedora — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1002150 Upstream summary: python-fedora 0.8.0 and lower is vulnerable to an open redirect resulting in loss of CSRF protection Table of contents Symptom & Impact Environment & Reproduction […]

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Debian 11 — google-oauth-client-java — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — google-oauth-client-java — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-7692 CVE-2021-22573 Upstream summary: PKCE support is not implemented in accordance with the RFC for OAuth 2.0 for Native Apps. Without the use of PKCE, the authorization code […]

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Debian 11 — node-mongodb — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-mongodb — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-13863 CVE-2019-2391 CVE-2020-7610 CVE-2021-32050 Upstream summary: The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regular Expression Denial […]

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Debian 11 — ruby-rack — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-rack — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-5036 CVE-2012-6109 CVE-2013-0183 CVE-2013-0184 CVE-2013-0262 CVE-2013-0263 CVE-2015-3225 CVE-2018-16471  +12 more Upstream summary: Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters […]

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Ubuntu 22.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 October 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5257-2 Related CVEs: CVE-2020-19860 CVE-2020-19861 Upstream summary: USN-5257-1 fixed several vulnerabilities in ldns. This update provides the corresponding update for Ubuntu 20.04 ESM and Ubuntu 22.04 ESM. Original advisory details: […]

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Common Problems 118475

Disk Full on /var Causes Service and apt Failures

🟡 Medium   ⏱ 5–30 min  Last verified: 18 October 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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Common Problems 115531

Dracut Initramfs Failure Leading to Emergency Shell

🟡 Medium   ⏱ 5–30 min  Last verified: 18 October 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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