Allocation of Resources Without Limits or Throttling

Affecting libxml2 package, versions <2.9.4+dfsg1-2.2+deb9u3

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Overview

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.

References

CVSS Score

6.5
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVE
CVE-2017-18258
CWE
CWE-770
Snyk ID
SNYK-DEBIAN9-LIBXML2-429525
Disclosed
08 Apr, 2018
Published
08 Apr, 2018