Common Problems

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-21289 CVE-2022-31033 Upstream summary: Mechanize is an open-source ruby library that makes automated web interaction easy. In Mechanize from version 2.0.0 and before version 2.7.7 there is a […]

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Debian 11 — libconvert-asn1-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libconvert-asn1-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-7488 Upstream summary: perl-Convert-ASN1 (aka the Convert::ASN1 module for Perl) through 0.27 allows remote attackers to cause an infinite loop via unexpected input. Table of contents Symptom & […]

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AlmaLinux 8 — apr-util — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — apr-util — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:3109 Related CVEs: CVE-2022-25147 Upstream summary: The Apache Portable Runtime (APR) is a portability library used by the Apache HTTP Server and other projects. apr-util is a library which provides additional utility […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-16981 CVE-2019-13217 CVE-2019-13218 CVE-2019-13219 CVE-2019-13220 CVE-2019-13221 CVE-2019-13222 CVE-2019-13223  +12 more Upstream summary: stb stb_image.h 2.19, as used in catimg, Emscripten, and other products, has a heap-based buffer overflow […]

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Oracle Linux 9 — wavpack — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — wavpack — vulnerability — patch and remediation guide (ELSA-2022-8139)

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8139 Related CVEs: CVE-2021-44269 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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Common Problems 120609

Debian 11 DHCP Lease Not Renewing on Servers

🟡 Medium   ⏱ 5–30 min  Last verified: 3 October 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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IBM AIX 7.3 — CVE-1999-1121 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-1121 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 3 October 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-1121, IBM PSIRT advisory page CVE: CVE-1999-1121 NVD summary: The default configuration for UUCP in AIX before 3.2 allows local users to gain root privileges. References: www.cert.org/advisories/CA-1992-06.html   www.osvdb.org/891   www.securityfocus.com/bid/38 Table […]

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IBM AIX 7.3 — CVE-1999-0048 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-0048 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 3 October 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-0048, IBM PSIRT advisory page CVE: CVE-1999-0048 NVD summary: Talkd, when given corrupt DNS information, can be used to execute arbitrary commands with root privileges. References: sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=col   sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=col Table of contents […]

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

AlmaLinux 8 — xz — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:4991 Related CVEs: CVE-2022-1271 Upstream summary: XZ Utils is an integrated collection of user-space file compression utilities based on the Lempel-Ziv-Markov chain algorithm (LZMA), which performs lossless data compression. The algorithm provides […]

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FreeBSD 13 — openhab — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — openhab — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: openhab — log4j remote code injection Related CVEs: CVE-2021-44228 Upstream summary: Openhab reports: Any openHAB instance that is publicly available or which consumes untrusted content from remote servers is potentially […]

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