Linux

Debian 11 — ruby-faye-websocket — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-faye-websocket — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15133 Upstream summary: In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to […]

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Debian 11 — logcheck — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — logcheck — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0404 Upstream summary: logcheck before 1.1.1 allows local users to overwrite arbitrary files via a symlink attack on a temporary directory in /var/tmp. Table of contents Symptom & […]

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Common Problems 114495

RHEL 9: Kernel Updates Fail Because /boot Is Full

🟡 Medium   ⏱ 5–30 min  Last verified: 18 December 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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Debian 11 — ioquake3 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ioquake3 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2082 CVE-2006-2236 CVE-2006-2875 CVE-2006-3324 CVE-2006-3325 CVE-2011-1412 CVE-2011-2764 CVE-2011-3012  +4 more Upstream summary: Directory traversal vulnerability in Quake 3 engine, as used in products including Quake3 Arena, Return to […]

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Common Problems 114485

RHEL 9: SSH Key Authentication Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 18 December 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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Debian 11 — pcf2bdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pcf2bdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-23318 CVE-2022-23319 Upstream summary: A heap-buffer-overflow in pcf2bdf, versions >= 1.05 allows an attacker to trigger unsafe memory access via a specially crafted PCF font file. This out-of-bound […]

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Debian 11 — epiphany-browser — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — epiphany-browser — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0238 CVE-2007-1084 CVE-2008-5985 CVE-2010-3312 CVE-2014-3566 CVE-2017-1000025 CVE-2018-11396 CVE-2018-12016  +8 more Upstream summary: The International Domain Name (IDN) support in Epiphany allows remote attackers to spoof domain names using […]

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Debian 11 — chmlib — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — chmlib — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-2659 CVE-2005-2930 CVE-2005-3318 CVE-2006-3178 CVE-2007-0619 Upstream summary: Buffer overflow in the LZX decompression in CHM Lib (chmlib) 0.35, as used in products such as KchmViewer, has unknown impact […]

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Ubuntu 20.04 — neutron — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — neutron — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 December 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6067-1 Related CVEs: CVE-2021-20267 CVE-2021-38598 CVE-2021-40085 CVE-2021-40797 CVE-2022-3277 Upstream summary: David Sinquin discovered that OpenStack Neutron incorrectly handled the default Open vSwitch firewall rules. An attacker could possibly use this […]

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Ubuntu 20.04 — jupyter-core — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — jupyter-core — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 December 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6153-1 Related CVEs: CVE-2022-39286 Upstream summary: It was discovered that Jupyter Core executed untrusted files in the current working directory. An attacker could possibly use this issue to execute arbitrary […]

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