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Debian 11 — netkit-telnet — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — netkit-telnet — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0911 CVE-2005-0469 CVE-2020-10188 Upstream summary: telnetd for netkit 0.17 and earlier, and possibly other versions, on Debian GNU/Linux allows remote attackers to cause a denial of service (free […]

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Debian 11 — mingw-w64 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mingw-w64 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000101 CVE-2018-5392 Upstream summary: Mingw-w64 version 5.0.3 and earlier, 5.0.4, 6.0.0 and 7.0.0 contains an Improper Null Termination (CWE-170) vulnerability in mingw-w64-crt (libc)->(v)snprintf that can result in The […]

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AlmaLinux 8 — json-c — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — json-c — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4382 Related CVEs: CVE-2020-12762 Upstream summary: JSON-C implements a reference counting object model that allows users to easily construct JavaScript Object Notation (JSON) objects in C, output them as JSON formatted strings, […]

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Debian 11 — grep — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

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

🟢 Low   ⏱ 5–15 min  Last verified: 5 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-5667 CVE-2015-1345 Upstream summary: Multiple integer overflows in GNU Grep before 2.11 might allow context-dependent attackers to execute arbitrary code via vectors involving a long input line that […]

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Ubuntu 18.04 — lxml — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — lxml — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 March 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5225-1 Related CVEs: CVE-2021-43818 CVE-2021-28957 CVE-2020-27783 CVE-2018-19787 Upstream summary: It was discovered that lxml incorrectly handled certain XML and HTML files. An attacker could possibly use this issue to execute […]

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How to Detect Rootkits with rkhunter and chkrootkit on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter and chkrootkit on RHEL 8

Rootkits are malicious software packages designed to gain persistent, hidden root-level access to a system by replacing or patching critical binaries, kernel modules, or configuration files. Two widely used open-source tools — rkhunter (Rootkit Hunter) and chkrootkit — complement each other by using different detection techniques: signature databases, hash comparisons, and behavioural checks. On RHEL […]

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openSUSE Tumbleweed — hwloc — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — hwloc — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2022-47022 Upstream summary: An issue was discovered in open-mpi hwloc 2.1.0 allows attackers to cause a denial of service or other unspecified impacts via glibc-cpuset in topology-linux.c. Table of […]

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Ubuntu 18.04 — jupyter-notebook — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — jupyter-notebook — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 March 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5585-1 Related CVEs: CVE-2018-19351 CVE-2018-21030 CVE-2019-10255 CVE-2019-10856 CVE-2019-9644 CVE-2020-26215 CVE-2022-24758 CVE-2022-29238 Upstream summary: It was discovered that Jupyter Notebook incorrectly handled certain notebooks. An attacker could possibly use this issue […]

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SLES 12 — python-Babel — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — python-Babel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 5 March 2022 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:599-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-42771 Upstream summary: Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to […]

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