7.8

CVSS Score

3.1

-

CVSS Score

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CVE-2024-55549

CVE-2024-55549: xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion...

xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2024-55549

CVE-2024-55549:

7.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

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Root Cause Analysis

The analysis started by examining the CVE description, which directly named xsltGetInheritedNsList as the vulnerable function. The provided commit 46041b65f2fbddf5c284ee1a1332fa2c515c0515 fixes the UAF. The patch for this commit modifies the exclPrefixPush function in libxslt/xslt.c. The patch comments and the commit message explain that the original value pointer in exclPrefixPush could point to a namespace definition that might be deleted later, specifically within xsltParseTemplateContent. The fix involves storing the namespace URI in the stylesheet's dictionary to prevent this UAF. Therefore, xsltGetInheritedNsList is where the UAF manifests, exclPrefixPush is a function that handles these potentially dangling pointers, and xsltParseTemplateContent is where the unsafe condition (premature deletion of namespace definitions) is created. All three are critical to understanding and triggering the vulnerability.

Vulnerable functions

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WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.

7.8

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Basic Information

Basic Information

Concerned about an active attack path?

CVE-2024-55549: xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion...

CVE-2024-55549:

7.8

-

Basic Information

Basic Information

Is this CVE running in your environment?

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

Vulnerability IntelligenceMiggo AI

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WAF Protection Rules

WAF Rule

Reasoning

Basic Information

Basic Information

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

7.8

7.8

CVE-2024-55549: xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion...

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI