Security Hardening

Debian 11 — mksh — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mksh — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-1845 Upstream summary: The Korn shell (aka mksh) before R33d on MirOS (aka MirBSD) does not flush the tty's I/O when invoking mksh in a new terminal, which […]

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Debian 11 — ruby-graphql — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-graphql — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-27407 Upstream summary: graphql-ruby is a Ruby implementation of GraphQL. Starting in version 1.11.5 and prior to versions 1.11.8, 1.12.25, 1.13.24, 2.0.32, 2.1.14, 2.2.17, and 2.3.21, loading a […]

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Debian 12 — libconfuse — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libconfuse — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-40320 Upstream summary: cfg_tilde_expand in confuse.c in libConfuse 3.3 has a heap-based buffer over-read. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Debian 11 — xmlrpc-epi — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xmlrpc-epi — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-6296 Upstream summary: Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before […]

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Debian 12 — tidy-html5 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — tidy-html5 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-17497 CVE-2021-33391 CVE-2025-6496 CVE-2025-6497 CVE-2025-6498 Upstream summary: In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of service (Segmentation Fault), because the currentNode […]

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

Debian 11 — python-eventlet — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-21419 CVE-2025-58068 Upstream summary: Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious […]

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Debian 11 — tomb — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tomb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-28638 Upstream summary: ask_password in Tomb 2.0 through 2.7 returns a warning when pinentry-curses is used and $DISPLAY is non-empty, causing affected users' files to be encrypted with […]

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Debian 12 — rsnapshot — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — rsnapshot — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1064 Upstream summary: The copy_symlink function in rsnapshot 1.2.0 and 1.1.x before 1.1.7 changes the ownership of files that a symlink points to rather than the symlink itself, […]

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Debian 12 — xserver-xorg-video-openchrome — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — xserver-xorg-video-openchrome — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1994 Upstream summary: Multiple integer overflows in X.org libchromeXvMC and libchromeXvMCPro in openChrome 0.3.2 and earlier allow X servers to trigger allocation of insufficient memory and a buffer […]

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Debian 12 — uw-imap — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — uw-imap — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1782 CVE-2003-0297 CVE-2005-0198 CVE-2005-2933 CVE-2008-5005 CVE-2008-5006 CVE-2008-5514 CVE-2018-19518 Upstream summary: The default configuration of University of Washington IMAP daemon (wu-imapd), when running on a system that does not […]

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