CVE-2023-50252 php-svg-lib unsafe attributes merge when parsing `use` tag

2023-12-1220:39:17

CWE-15

CWE-502

GitHub_M

www.cve.org

cve-2023-50252

php-svg-lib

unsafe attributes

parsing

use tag

image tag

href attribute

sanitized

phar deserialization

php 8.

8.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

9.6 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

41.2%

JSON

php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when handling <use> tag that references an <image> tag, it merges the attributes from the <use> tag to the <image> tag. The problem pops up especially when the href attribute from the <use> tag has not been sanitized. This can lead to an unsafe file read that can cause PHAR Deserialization vulnerability in PHP prior to version 8. Version 0.5.1 contains a patch for this issue.

CNA Affected

[
  {
    "vendor": "dompdf",
    "product": "php-svg-lib",
    "versions": [
      {
        "version": "< 0.5.1",
        "status": "affected"
      }
    ]
  }
]