CVE-2023-0567

2023-02-1500:00:00

ubuntu.com

php version 8

password_verify function

blowfish hashes

invalid hash

security vulnerability

application security

CVSS3

7.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.001

Percentile

23.6%

JSON

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.

Bugs

Notes

Author	Note
mdeslaur	This vulnerability requires an attacker to be able to modify password hashes, which is an unlikely scenario

OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchphp5< anyUNKNOWN
ubuntu16.04noarchphp7.0< 7.0.33-0ubuntu0.16.04.16+esm6UNKNOWN
ubuntu18.04noarchphp7.2< 7.2.24-0ubuntu0.18.04.17UNKNOWN
ubuntu20.04noarchphp7.4< 7.4.3-4ubuntu2.18UNKNOWN
ubuntu22.04noarchphp8.1< 8.1.2-1ubuntu2.11UNKNOWN
ubuntu22.10noarchphp8.1< 8.1.7-1ubuntu3.3UNKNOWN
ubuntu23.04noarchphp8.1< 8.1.12-1ubuntu4UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	14.04	noarch	php5	< any	UNKNOWN
ubuntu	16.04	noarch	php7.0	< 7.0.33-0ubuntu0.16.04.16+esm6	UNKNOWN
ubuntu	18.04	noarch	php7.2	< 7.2.24-0ubuntu0.18.04.17	UNKNOWN
ubuntu	20.04	noarch	php7.4	< 7.4.3-4ubuntu2.18	UNKNOWN
ubuntu	22.04	noarch	php8.1	< 8.1.2-1ubuntu2.11	UNKNOWN
ubuntu	22.10	noarch	php8.1	< 8.1.7-1ubuntu3.3	UNKNOWN
ubuntu	23.04	noarch	php8.1	< 8.1.12-1ubuntu4	UNKNOWN