CVE-2023-50262

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-50262
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-50262.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-50262
Aliases
Downstream
Published
2023-12-13T20:52:56.173Z
Modified
2025-12-05T00:12:49.736356Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Dompdf possible DoS caused by infinite recursion when parsing SVG images
Details

Dompdf is an HTML to PDF converter for PHP. When parsing SVG images Dompdf performs an initial validation to ensure that paths within the SVG are allowed. One of the validations is that the SVG document does not reference itself. However, prior to version 2.0.4, a recursive chained using two or more SVG documents is not correctly validated. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself.

php-svg-lib, when run in isolation, does not support SVG references for image elements. However, when used in combination with Dompdf, php-svg-lib will process SVG images referenced by an image element. Dompdf currently includes validation to prevent self-referential image references, but a chained reference is not checked. A malicious actor may thus trigger infinite recursion by chaining references between two or more SVG images.

When Dompdf parses a malicious payload, it will crash due after exceeding the allowed execution time or memory usage. An attacker sending multiple request to a system can potentially cause resource exhaustion to the point that the system is unable to handle incoming request.

Version 2.0.4 contains a fix for this issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50262.json",
    "cwe_ids": [
        "CWE-20",
        "CWE-674"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/dompdf/dompdf

Affected ranges

Type
GIT
Repo
https://github.com/dompdf/dompdf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
093f2d9739cec57428e39ddadedfd4f3ae862c0f