Common Problems

Common Problems 115616

RHEL 7 yum Cache Stale After Proxy Configuration Change

🟢 Low   ⏱ 5–30 min  Last verified: 10 February 2021 Affected versions: RHEL 7 📖 ~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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SLES 12 — libvirt — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libvirt — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 February 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:2969-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25637 CVE-2021-4147 CVE-2013-4296 CVE-2017-1000256 CVE-2019-10132 CVE-2019-10161 CVE-2019-10166 CVE-2019-10167  +12 more Upstream summary: A double free memory issue was found to occur in the libvirt API, […]

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Common Problems 112502

Windows Server 2019 – AD CS certificate template error – The requested certificate template is not supported – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 February 2021 Affected versions: Windows Server 2019 📖 ~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 — varnish:6 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — varnish:6 — vulnerability — patch and remediation guide (ELSA-2021-2988)

🟠 High   ⏱ 15–60 min  Last verified: 10 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-2988 Related CVEs: CVE-2021-36740 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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Debian 10 — salt — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — salt — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17361 CVE-2020-11651 CVE-2020-16846 CVE-2021-21996 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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Oracle Linux 8 — ghostscript security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ghostscript security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-1852)

🟡 Medium   ⏱ 10–30 min  Last verified: 9 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1852 Related CVEs: CVE-2020-16292 CVE-2020-16294 CVE-2020-16306 CVE-2020-16287 CVE-2020-16307 CVE-2020-16298 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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FreeBSD 12 — piwigo — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — piwigo — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 February 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: piwigo — SQL injection Related CVEs: CVE-2013-1468 CVE-2013-1469 CVE-2020-8089 Upstream summary: Piwigo reports: Piwigo is affected by multiple SQL injection issues. Table of contents Symptom & Impact Environment & Reproduction […]

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FreeBSD 12 — tcpslice — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — tcpslice — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 February 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tcpslice — heap-based use-after-free in extract_slice() Related CVEs: CVE-2021-41043 Upstream summary: The Tcpdump Group reports: heap-based use-after-free in extract_slice() Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Amazon Linux 2 — squashfs-tools — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — squashfs-tools — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2152 Related CVEs: CVE-2015-4645 CVE-2015-4646 CVE-2021-40153 CVE-2021-41072 Upstream summary: Integer overflow in the read_fragment_table_4 function in unsquash-4.c in Squashfs and sasquatch allows remote attackers to cause a denial of service […]

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