Common Problems

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

Debian 11 — ssvnc — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-20020 CVE-2018-20021 CVE-2018-20022 CVE-2018-20024 Upstream summary: LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution Table […]

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Common Problems 120645

Debian 11 Hostname Resolution Warning sudo unable to resolve host

🟢 Low   ⏱ 5–30 min  Last verified: 13 July 2022 Affected versions: Debian 11 📖 ~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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Debian 11 — oath-toolkit — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — oath-toolkit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-7322 Upstream summary: usersfile.c in liboath in OATH Toolkit before 2.4.1 does not properly handle lines containing an invalid one-time-password (OTP) type and a user name in /etc/users.oath, […]

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Ubuntu 14.04 — wireshark — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — wireshark — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 July 2022 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7552-1 Related CVEs: CVE-2021-4185 CVE-2022-0582 CVE-2022-0586 CVE-2022-3190 CVE-2021-4182 CVE-2022-0585 CVE-2021-39929 CVE-2021-4186  +7 more Upstream summary: It was discovered that Wireshark did not correctly handle recursion. If a user or system […]

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SLES 15 — hdf5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — hdf5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 July 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:0691-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-37501 CVE-2018-13867 CVE-2018-17439 CVE-2021-45830 CVE-2021-45833 CVE-2021-46242 CVE-2018-11205 CVE-2018-14031  +4 more Upstream summary: Buffer Overflow vulnerability in HDFGroup hdf5-h5dump 1.12.0 through 1.13.0 allows attackers to cause […]

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Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2022-0535)

🟠 High   ⏱ 15–60 min  Last verified: 13 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0535 Related CVEs: CVE-2022-22756 CVE-2022-22760 CVE-2022-22763 CVE-2022-22754 CVE-2022-22761 CVE-2022-22764 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 116961

Ubuntu 22.04 LTS – Cloud-init overwrites network config unexpectedly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 13 July 2022 Affected versions: Ubuntu 22.04 LTS 📖 ~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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Oracle Linux 8 — babel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — babel — security and stability fixes — required update (ELSA-2021-4201)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4201 Related CVEs: CVE-2021-42771 CVE-2021-20095 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 120642

Debian 11 – Apache2 Fails with Address Already in Use – Port Conflict Resolution

🟠 High   ⏱ 5–30 min  Last verified: 12 July 2022 Affected versions: Debian 11 📖 ~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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