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OpenAdvisories
High USN-4164-1 3 CVEs

libxslt vulnerabilities

Published Oct 22, 2019 · Updated Jun 29, 2026

Summary

It was discovered that Libxslt incorrectly handled certain documents.
An attacker could possibly use this issue to access sensitive information.
This issue not affected Ubuntu 19.10. (CVE-2019-13117, CVE-2019-13118)

It was discovered that Libxslt incorrectly handled certain documents.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-18197)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS libxslt 1.1.28-2.1ubuntu0.3
Ubuntu · 18.04 LTS 18.04:LTS libxslt 1.1.29-5ubuntu0.2
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS libxslt 1.1.28-2ubuntu0.2+esm1

Vulnerabilities 3

  • High 7.5

    Nokogiri affected by libxslt Use of Uninitialized Resource/Use After Free vulnerability

    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 …

  • Medium 5.3

    Uninitialized read in Nokogiri gem

    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…

  • Medium 5.3

    libxslt Type Confusion vulnerability that affects Nokogiri

    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.

References

  • report
    https://ubuntu.com/security/CVE-2019-13117
  • report
    https://ubuntu.com/security/CVE-2019-13118
  • report
    https://ubuntu.com/security/CVE-2019-18197