Ubuntu 20.04 — phpseclib — multiple vulnerabilities (4 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 17 May 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7404-1 Related CVEs: CVE-2021-30130 CVE-2023-52892 CVE-2024-27354 CVE-2024-27355 Upstream summary: It was discovered that phpseclib did not correctly handle RSA PKCS#1 v1.5 signature verification. An attacker could possibly use this issue […]