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IBM HTTP Server: CVE-2018-20843: Improper Restriction of XML External Entity Reference ('XXE')

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IBM HTTP Server: CVE-2018-20843: Improper Restriction of XML External Entity Reference ('XXE')

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
06/24/2019
Created
11/06/2019
Added
11/05/2019
Modified
06/23/2020

Description

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Solution(s)

  • ibm-http_server-apply-fix-pack-8_5_5_17
  • ibm-http_server-apply-fix-pack-9_0_5_1
  • ibm-http_server-apply-interim-fix-ph14974-for-8_5
  • ibm-http_server-apply-interim-fix-ph14974-for-9_0

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