Vulnerability · Published Feb 21, 2024 · Assigned by GitHub_M

CVE-2024-25117php-svg-lib lacks path validation on font through SVG inline styles

Medium 6.8

In plain English

A medium-severity unsafe deserialization in php-svg-lib from dompdf. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.9%top 39.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

php-svg-lib is a scalable vector graphics (SVG) file parsing/rendering library. Prior to version 0.5.2, php-svg-lib fails to validate that font-family doesn't contain a PHAR url, which might leads to RCE on PHP < 8.0, and doesn't validate if external references are allowed. This might leads to bypass of restrictions or RCE on projects that are using it, if they do not strictly revalidate the fontName that is passed by php-svg-lib. The `Style::fromAttributes(`), or the `Style::parseCssStyle()` should check the content of the `font-family` and prevents it to use a PHAR url, to avoid passing an invalid and dangerous `fontName` value to other libraries. The same check as done in the `Style::fromStyleSheets` might be reused. Libraries using this library as a dependency might be vulnerable to some bypass of restrictions, or even remote code execution, if they do not double check the value of the `fontName` that is passed by php-svg-lib. Version 0.5.2 contains a fix for this issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	php-dompdf-svg-lib	0.5.0-3+deb12u1	DEBIAN-CVE-2024-25117
Debian:12	php-dompdf-svg-lib	0.5.0-3+deb12u1	DSA-5642-1
Packagist	phenx/php-svg-lib	0.5.2	GHSA-f3qr-qr4x-j273

Affected products (as reported)

Vendor	Product	Versions
dompdf	php-svg-lib	< 0.5.2

Weakness: CWE-73, CWE-502 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

References

https://github.com/dompdf/php-svg-lib/security/advisories/GHSA-f3qr-qr4x-j273 x_refsource_CONFIRM
https://github.com/dompdf/php-svg-lib/commit/732faa9fb4309221e2bd9b2fda5de44f947133aa x_refsource_MISC
https://github.com/dompdf/php-svg-lib/commit/8ffcc41bbde39f09f94b9760768086f12bbdce42 x_refsource_MISC