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Allocation of Resources Without Limits or Throttling Affecting libxml2 package, versions <0:2.9.1-6.4.40.amzn1

high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 1.73% (88th percentile)
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NVD
6.5 medium
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Red Hat
3.5 low

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  • Snyk ID SNYK-AMZN201803-LIBXML2-1724011
  • published 27 Sep 2021
  • disclosed 8 Apr 2018
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Introduced: 8 Apr 2018

CVE-2017-18258 Open this link in a new tab
CWE-770 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 libxml2 to version 0:2.9.1-6.4.40.amzn1 or higher.
This issue was patched in ALAS-2020-1415.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.