8.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2021-30560

CVE-2021-30560: Nokogiri has vulnerable dependencies on libxml2 and libxslt

Use after free in Blink XSLT in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2021-30560

CVE-2021-30560:

8.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
nokogiri	rubygems	< 1.13.2	1.13.2

Technical Details

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Miggo AI

Root Cause Analysis

The vulnerability CVE-2021-30560 is a use-after-free in the libxslt C library, which Nokogiri uses. The provided commit information shows that Nokogiri addressed this by updating its vendored version of libxslt. There are no code changes in Nokogiri's Ruby source files that indicate a specific vulnerable Ruby function. The vulnerability is in the underlying C library, not in Nokogiri's Ruby code. Therefore, no specific Ruby functions can be identified as 'vulnerable' from the patch; rather, any function in Nokogiri that uses libxslt for XSLT transformations could potentially trigger the vulnerability if processing a malicious XSLT file with a vulnerable version of libxslt.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

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WAF Protection Rules

WAF Rule

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Reasoning

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