Advisory Details

August 13th, 2019

Microsoft Windows XmlLite XML space Attribute Denial-Of-Service Vulnerability

ZDI-19-710
ZDI-CAN-8494

CVE ID CVE-2019-1187
CVSS SCORE 4.3, AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows remote attackers to produce a denial-of-service condition on affected installations of Microsoft Windows. Interaction with the XmlLite.dll library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the handling of xml:space attributes in XmlLite.dll. A crafted xml:space attribute can cause a write to a read-only memory page. An attacker can leverage this vulnerability to produce a denial-of-service condition.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1187
DISCLOSURE TIMELINE
  • 2019-05-02 - Vulnerability reported to vendor
  • 2019-08-13 - Coordinated public release of advisory
CREDIT Catxploit
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