Common Problems

Common Problems 121513

Debian 9: Network outage from ifupdown and NetworkManager conflict

🟠 High   ⏱ 5–30 min  Last verified: 20 September 2019 Affected versions: Debian 9 📖 ~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 & […]

Read more
FreeBSD 12 — py33-rsa — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py33-rsa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 September 2019 Affected versions: FreeBSD 12 📖 ~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 […]

Read more
Common Problems 119091

Ubuntu 14.04 LTS rsyslog stops ingesting logs after disk saturation

🟡 Medium   ⏱ 5–30 min  Last verified: 20 September 2019 Affected versions: 14.04 📖 ~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 […]

Read more
Amazon Linux 2 — keycloak-httpd-client-install — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — keycloak-httpd-client-install — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2019-1324 Related CVEs: CVE-2017-15111 CVE-2017-15112 Upstream summary: It was discovered that keycloak-httpd-client-install uses a predictable log file name in /tmp. A local attacker could create a symbolic link to a […]

Read more
FreeBSD 12 — nagios — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — nagios — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: nagios — denial of service vulnerability Related CVEs: CVE-2007-5803 CVE-2008-5027 CVE-2009-2288 CVE-2012-6096 CVE-2013-7108 CVE-2013-7205 Upstream summary: Eric Stanley reports: Most CGIs previously incremented the input variable counter twice when it […]

Read more
FreeBSD 12 — doas — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — doas — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: doas — Prevent passing of environment variables Upstream summary: Jesse Smith (upstream author of the doas program) reported: Previous versions of "doas" transferred most environment variables, such as USER, HOME, […]

Read more
Common Problems 113578

Windows Server 2012 R2 — Dual-scan behaviour causes clients to bypass WSUS for feature updates — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 September 2019 Affected versions: Windows Server 2012 R2 📖 ~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 […]

Read more
Common Problems 113124

Windows Server 2016 — dsregcmd shows hybrid Azure AD join failure on Windows clients — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 September 2019 Affected versions: Windows Server 2016 📖 ~2 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 […]

Read more
FreeBSD 12 — evolution — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — evolution — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 September 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: evolution — remote format string vulnerabilities Related CVEs: CVE-2005-0102 CVE-2005-2549 CVE-2005-2550 Upstream summary: A SITIC Vulnerability Advisory reports: Evolution suffers from several format string bugs when handling data from remote […]

Read more
CHAT