Common Problems

Ubuntu 16.04 — libsepol — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libsepol — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 August 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5391-1 Related CVEs: CVE-2021-36084 CVE-2021-36085 CVE-2021-36086 CVE-2021-36087 Upstream summary: Nicolas Iooss discovered that libsepol incorrectly handled memory when handling policies. An attacker could possibly use this issue to cause a […]

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Oracle Linux 8 — ELSA-2020-5503-1: mariadb-connector-c security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ELSA-2020-5503-1: mariadb-connector-c security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-5503-1)

🟡 Medium   ⏱ 10–30 min  Last verified: 10 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5503-1 Related CVEs: CVE-2020-13249 CVE-2020-2752 CVE-2020-2574 CVE-2020-2922 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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FreeBSD 13 — py310-ansible — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py310-ansible — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-ansible — multiple vulnerabilities Related CVEs: CVE-2020-25635 CVE-2020-25636 CVE-2021-3532 CVE-2021-3620 Upstream summary: abeluck reports: A flaw was found in Ansible Base when using the aws_ssm connection plugin as garbage collector […]

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FreeBSD 13 — py37-twisted — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-twisted — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-twisted — cookie and authorization headers are leaked when following cross-origin redirects Related CVEs: CVE-2019-12387 CVE-2019-9512 CVE-2019-9514 CVE-2019-9515 CVE-2020-10108 CVE-2020-10109 Upstream summary: Twisted developers report: Cookie and Authorization headers are […]

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FreeBSD 13 — py36-matrix-synapse — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py36-matrix-synapse — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-matrix-synapse — several vulnerabilities Related CVEs: CVE-2019-5885 CVE-2020-26257 CVE-2020-26891 CVE-2021-29471 CVE-2021-39163 CVE-2021-39164 CVE-2021-41281 Upstream summary: Matrix developers report: This release patches one high severity issue affecting Synapse installations 1.47.0 and […]

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FreeBSD 13 — lbreakout — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — lbreakout — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: lbreakout2 vulnerability in environment variable handling Related CVEs: CVE-2004-0158 Upstream summary: Ulf Härnhammar discovered an exploitable vulnerability in lbreakout2's environmental variable handling. In several instances, the contents of the HOME […]

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Ubuntu 20.04 — junit4 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — junit4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 August 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4731-1 Related CVEs: CVE-2020-15250 Upstream summary: It was discovered that JUnit 4 contains a local information disclosure vulnerability. An attacker could possibly use this issue to obtain sensitive information. Table […]

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FreeBSD 13 — mozilla — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mozilla — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozilla — multiple vulnerabilities Related CVEs: CVE-2004-0597 CVE-2004-0598 CVE-2004-0599 CVE-2004-0717 CVE-2004-0718 CVE-2004-0721 CVE-2004-0722 CVE-2004-0757  +12 more Upstream summary: [email protected] reports: Memory safety bugs present in Firefox 134 and Thunderbird 134. […]

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Oracle Linux 8 — nodejs:14 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — nodejs:14 — security and stability fixes — required update (ELSA-2021-3666)

🟠 High   ⏱ 15–60 min  Last verified: 9 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3666 Related CVEs: CVE-2021-22939 CVE-2021-3672 CVE-2021-32804 CVE-2021-22940 CVE-2021-32803 CVE-2021-22930 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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AlmaLinux 8 — libxcb — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libxcb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:1633 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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