Security Hardening

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

Debian 11 — cxxtools — 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-2013-7298 Upstream summary: query_params.cpp in cxxtools before 2.2.1 allows remote attackers to cause a denial of service (infinite recursion and crash) via an HTTP query that contains %% […]

Read more
Debian 12 — jabberd2 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — jabberd2 — multiple vulnerabilities (6 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-2006-1329 CVE-2011-1755 CVE-2012-3525 CVE-2015-2058 CVE-2017-10807 CVE-2017-18226 Upstream summary: The SASL negotiation in Jabber Studio jabberd before 2.0s11 allows remote attackers to cause a denial of service ("c2s segfault") […]

Read more
Debian 11 — libxcrypt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxcrypt — 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-2011-2483 Upstream summary: crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which […]

Read more
Debian 13 — zoph — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — zoph — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0402 CVE-2007-3905 CVE-2008-3258 CVE-2008-6837 CVE-2008-6838 CVE-2009-2343 CVE-2014-9235 CVE-2014-9236 Upstream summary: SQL injection vulnerability in Zoph before 0.5pre1 allows remote attackers to execute arbitrary SQL commands. Table of contents […]

Read more
Debian 11 — optipng — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — optipng — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5101 CVE-2009-0749 CVE-2015-7801 CVE-2015-7802 CVE-2016-2191 CVE-2016-3981 CVE-2016-3982 CVE-2017-1000229  +2 more Upstream summary: Buffer overflow in the BMP reader in OptiPNG 0.6 and 0.6.1 allows user-assisted attackers to execute […]

Read more
Debian 12 — anope — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — anope — 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-2024-30187 Upstream summary: Anope before 2.0.15 does not prevent resetting the password of a suspended account. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

Read more
Debian 13 — fail2ban — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — fail2ban — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-4321 CVE-2009-0362 CVE-2009-5023 CVE-2012-5642 CVE-2013-2178 CVE-2013-7176 CVE-2013-7177 CVE-2021-32749 Upstream summary: fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary […]

Read more
Debian 11 — libxtst — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxtst — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2063 CVE-2016-7951 CVE-2016-7952 Upstream summary: Integer overflow in X.org libXtst 1.2.1 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via vectors […]

Read more
Debian 13 — libxvmc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libxvmc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1990 CVE-2013-1999 CVE-2016-7953 Upstream summary: Multiple integer overflows in X.org libXvMC 1.0.7 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via […]

Read more
Debian 13 — node-ua-parser-js — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — node-ua-parser-js — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-7793 CVE-2021-27292 CVE-2022-25927 Upstream summary: The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info). […]

Read more
CHAT