by Kastro
Paper/Archive/CVE-2023-23924

CVE-2023-23924

dompdf dompdf — URI validation failure on SVG parsing in Dompdf

EPSS 4%public exploitCVSS 10.0
critical.is priorityof 100
58
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 89.4.894 × 2017.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

Dompdf is an HTML to PDF converter. The URI validation on dompdf 2.0.1 can be bypassed on SVG parsing by passing `<image>` tags with uppercase letters. This may lead to arbitrary object unserialize on PHP < 8, through the `phar` URL wrapper. An attacker can exploit the vulnerability to call arbitrary URL with arbitrary protocols, if they can provide a SVG file to dompdf. In PHP versions before 8.0.0, it leads to arbitrary unserialize, that will lead to the very least to an arbitrary file deletion and even remote code execution, depending on classes that are available.

Affected

ProductAffectedFixed inSource
dompdf< 2.0.2–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

refgithub.com/dompdf/dompdf/security/advisories/GHSA-3cw5-7cxw-v5qgrefgithub.com/dompdf/dompdf/commit/7558f07f693b2ac3266089f21051e6b78c6a0c85refgithub.com/dompdf/dompdf/releases/tag/v2.0.2