ubuntu

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 24 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6640-1 Related CVEs: CVE-2023-4641 CVE-2013-4235 Upstream summary: It was discovered that shadow was not properly sanitizing memory when running the password utility. An attacker could possibly use this issue to […]

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Ubuntu 16.04 — cryptojs — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — cryptojs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 September 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6753-1 Related CVEs: CVE-2023-46233 Upstream summary: Thomas Neil James Shadwell discovered that CryptoJS was using an insecure cryptographic default configuration. A remote attacker could possibly use this issue to expose […]

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Ubuntu 22.04 — libtirpc — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libtirpc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5538-1 Related CVEs: CVE-2021-46828 Upstream summary: It was discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. Table of […]

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Common Problems 116969

Ubuntu 22.04 LTS – UFW is enabled but expected rules are not applied

🟡 Medium   ⏱ 5–30 min  Last verified: 23 September 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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Ubuntu 16.04 — maradns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — maradns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 September 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6271-1 Related CVEs: CVE-2022-30256 CVE-2023-31137 Upstream summary: Xiang Li discovered that MaraDNS incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted […]

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Ubuntu 22.04 — libxstream-java — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libxstream-java — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5946-1 Related CVEs: CVE-2021-39139 CVE-2021-39140 CVE-2021-39141 CVE-2021-39144 CVE-2021-39145 CVE-2021-39146 CVE-2021-39147 CVE-2021-39148  +7 more Upstream summary: Lai Han discovered that XStream incorrectly handled certain inputs. If a user or an automated […]

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Ubuntu 18.04 — nodejs — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nodejs — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 September 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7469-3 Related CVEs: CVE-2023-44487 CVE-2023-30588 CVE-2023-30589 CVE-2023-30590 CVE-2022-32212 CVE-2022-32213 CVE-2022-32214 CVE-2022-32215  +12 more Upstream summary: USN-7469-1 fixed a vulnerability in Apache Traffic Server. This update provides the corresponding updates for […]

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Ubuntu 18.04 — gawk — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gawk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 September 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6373-1 Related CVEs: CVE-2023-4156 Upstream summary: It was discovered that gawk could be made to read out of bounds when processing certain inputs. If a user or an automated system […]

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Ubuntu 22.04 — linux-oem-5.17 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — linux-oem-5.17 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6247-1 Related CVEs: CVE-2022-2663 CVE-2022-3635 CVE-2022-47929 CVE-2023-2860 CVE-2023-31248 CVE-2023-35001 CVE-2022-4842 CVE-2023-0597  +12 more Upstream summary: David Leadbeater discovered that the netfilter IRC protocol tracking implementation in the Linux Kernel incorrectly […]

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Common Problems 117050

Ubuntu 22.04 LTS ext4 Filesystem Remounted Read-Only After I/O Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 22 September 2023 📖 ~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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