Linux

Debian 11 — apache2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — apache2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2001-1534 CVE-2002-0392 CVE-2002-0654 CVE-2002-0661 CVE-2002-0840 CVE-2002-1156 CVE-2002-1592 CVE-2002-1593  +12 more Upstream summary: mod_usertrack in Apache 1.3.11 through 1.3.20 generates session ID's using predictable information including host IP address, […]

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openSUSE Tumbleweed — libZXing1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libZXing1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0157-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-28021 CVE-2021-42716 CVE-2021-42715 Upstream summary: Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file. Table of contents Symptom […]

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Oracle Linux 8 — cyrus-sasl security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — cyrus-sasl security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4497)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4497 Related CVEs: CVE-2019-19906 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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AlmaLinux 8 — radvd — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — radvd — 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-2020:4640 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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Debian 11 — xml-security-c — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xml-security-c — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0217 CVE-2011-2516 CVE-2013-2153 CVE-2013-2154 CVE-2013-2155 CVE-2013-2156 CVE-2013-2210 Upstream summary: The design of the W3C XML Signature Syntax and Processing (XMLDsig) recommendation, as implemented in products including (1) the […]

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

AlmaLinux 8 — drpm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4700 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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Debian 10 — libx11 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libx11 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-31535 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 11 — rustc — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rustc — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-20001 CVE-2017-20004 CVE-2018-1000622 CVE-2018-1000657 CVE-2018-1000810 CVE-2018-25008 CVE-2019-1010299 CVE-2020-36317  +12 more Upstream summary: In the standard library in Rust before 1.2.0, BinaryHeap is not panic-safe. The binary heap is […]

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Debian 11 — ruby-json-jwt — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-json-jwt — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000539 CVE-2019-18848 Upstream summary: Nov json-jwt version >= 0.5.0 && < 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web […]

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How to Configure Kerberos Authentication on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Kerberos Authentication on RHEL 7

How to Configure Kerberos Authentication on RHEL 7 Kerberos is a network authentication protocol that uses symmetric-key cryptography to allow clients and servers to prove their identity to each other securely without transmitting passwords over the network. It is the backbone of authentication in Active Directory environments and is natively supported across Linux through MIT […]

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