CVE-2023-0567 — password_verify() always returns true for some invalid hashes

Affected: PHP Group PHP

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, password_verify() function may accept some invalid Blowfish hashes as valid. If such invalid hash ever ends up in the password database, it may lead to an application allowing any password for this entry as valid.

USN-5902-1 — php7.2, php7.4, php8.1 vulnerabilities

Affected: Ubuntu:18.04:LTS: php7.2, Ubuntu:20.04:LTS: php7.4, Ubuntu:22.04:LTS: php8.1

It was discovered that PHP incorrectly handled certain invalid Blowfish password hashes. An invalid password hash could possibly allow applications to accept any password as valid, contrary to expectations. (CVE-2023-0567)

It was discovered that PHP incorrectly handled resolving long paths. A remote attacker could possibly use this issue to obtain or modify sensitive information. (CVE-2023-0568)

It was discovered that PHP incorrectly handled a large number of parts in HTTP form uploads. A remote attacker could possibly use this issue to cause PHP to consume resources, leading to a denial of service. (CVE-2023-0662)

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CVE-2023-0567 — password_verify() always returns true for some invalid hashes

USN-5902-1 — php7.2, php7.4, php8.1 vulnerabilities