Operations

How to Configure HAProxy Load Balancer on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure HAProxy Load Balancer on FreeBSD 12

Introduction Deploying configure haproxy load balancer on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

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Ubuntu 20.04 — libksba — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libksba — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 September 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5787-1 Related CVEs: CVE-2022-47629 CVE-2022-3515 Upstream summary: It was discovered that Libksba incorrectly handled parsing CRL signatures. A remote attacker could use this issue to cause Libksba to crash, resulting […]

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IBM AIX 7.1 — CVE-2022-22368 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2022-22368 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 19 September 2022 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2022-22368, IBM Support Bulletin CVE: CVE-2022-22368 NVD summary: IBM Spectrum Scale 5.1.0 through 5.1.3.0 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force […]

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How to Configure Bonding Network Interfaces on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Bonding Network Interfaces on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up configure bonding network interfaces on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and […]

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FreeBSD 13 — py35-rsa — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py35-rsa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-rsa — Bleichenbacher'06 signature forgery vulnerability Related CVEs: CVE-2016-1494 Upstream summary: Filippo Valsorda reports: python-rsa is vulnerable to a straightforward variant of the Bleichenbacher'06 attack against RSA signature verification with […]

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

Debian 11 — monkeysphere — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-4096 Upstream summary: share/ma/keys_for_user in Monkeysphere 0.31 and 0.32 allows local users to execute arbitrary code via unknown manipulations related to the "monkeysphere-authentication keys-for-user" command. Table of contents […]

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Common Problems 120655

Debian 11 Permissions Changed Incorrectly After Recursive chmod

🟠 High   ⏱ 5–30 min  Last verified: 18 September 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 — cloudcompare — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — cloudcompare — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-21897 Upstream summary: A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An […]

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FreeBSD 13 — zh-emacs — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — zh-emacs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: emacs — movemail format string vulnerability Related CVEs: CVE-2005-0100 Upstream summary: Max Vozeler discovered several format string vulnerabilities in the movemail utility of Emacs. They can be exploited when connecting […]

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

Debian 11 — havp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-3688 Upstream summary: sockethandler.cpp in HTTP Antivirus Proxy (HAVP) 0.88 allows remote attackers to cause a denial of service (hang) by connecting to a non-responsive server, which triggers […]

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CHAT