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Uncontrolled Memory Allocation Affecting nokogiri package, versions <1.10.5

0.0
high

Snyk CVSS

    Attack Complexity High
    Scope Changed
    Confidentiality High
    Integrity High

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  • Snyk ID SNYK-RUBY-NOKOGIRI-534637
  • published 19 Nov 2019
  • disclosed 17 Nov 2019
  • credit Unknown
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Introduced: 17 Nov 2019

CVE NOT AVAILABLE CWE-789 Open this link in a new tab

How to fix?

Upgrade nokogiri to version 1.10.5 or higher.

Overview

nokogiri is a gem for parsing HTML, XML, SAX, and Reader.

Affected versions of this package are vulnerable to Uncontrolled Memory Allocation. Nokogiri bundles the libxslt C library, that has been recently discovered to have vulnerabilities.

CVE-2019-13117 In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This could allow an attacker to discern whether a byte on the stack contains the characters A, a, I, i, or 0, or any other character.

CVE-2019-13118 In numbers.c in libxslt 1.1.33, a type holding grouping characters of an xsl:number instruction was too narrow and an invalid character/length combination could be passed to xsltNumberFormatDecimal, leading to a read of uninitialized stack data

CVE-2019-18197 In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.