Ubuntu 20 .04にPostfixをインストールして設定 する方法
Postfixは人気のあるオープンソースのメール転送エージェント（Mail Transfer Agent: MTA）であり、Linuxシステムで電子メールのルーティングや配信に使用できます。インターネット上のパブリックメールサーバーの約25％がPostfixを実行していると推定されます。このガイドでは、Ubuntu 20.04サーバーにPostfixをインストールして設定する方法を学びます。
AlmaLinux 8 — opencryptoki — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2026:5587 Related CVEs: CVE-2026-23893 CVE-2024-0914 Upstream summary: The opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes […]
Alpine Linux edge — binaryen — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 129-r0 📖 ~4 min read • Source: Alpine secdb entry — binaryen 129-r0 Related CVEs: CVE-2025-14956 CVE-2025-14957 Upstream summary: Alpine community repository for vedge ships binaryen 129-r0 which addresses CVE-2025-14956. Table of contents Symptom & Impact […]
Rocky Linux 10 — curl — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Rocky Linux 10 📖 ~4 min read • Source: Rocky Linux RXSA RLSA-2026:1825 Related CVEs: CVE-2025-9086 Upstream summary: The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. […]
Debian 11 — xdg-utils — multiple vulnerabilities (6 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 18 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2014-9622 CVE-2015-1877 CVE-2017-18266 CVE-2020-27748 CVE-2022-4055 CVE-2025-52968 Upstream summary: Eval injection vulnerability in xdg-utils 1.1.0 RC1, when no supported desktop environment is identified, allows context-dependent attackers to execute arbitrary […]
Debian 13 — autogen — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 May 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2025-8746 Upstream summary: A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6. Affected is the function __strstr_sse2. The manipulation leads to memory corruption. […]
Debian 12 — opencascade — multiple vulnerabilities (6 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 18 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2026-42476 CVE-2026-42477 CVE-2026-42478 CVE-2026-42479 CVE-2026-42480 CVE-2026-42481 Upstream summary: Two heap-based out-of-bounds read vulnerabilities in the STL ASCII file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 exist in RWStl_Reader::ReadAscii […]
Debian 13 — plexus-archiver — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 May 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2018-1002200 Upstream summary: plexus-archiver before 3.6.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in an archive entry that […]
Debian 13 — golang-github-containers-image — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 May 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2024-3727 Upstream summary: A flaw was found in the github.com/containers/image library. This flaw allows attackers to trigger unexpected authenticated registry accesses on behalf of a victim user, causing resource […]
Debian 11 — wget2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2025-69194 CVE-2026-1858 Upstream summary: A security issue was discovered in GNU Wget2 when handling Metalink documents. The application fails to properly validate file paths provided in Metalink <file […]
