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IBM HTTP Server: CVE-2021-45960: Expat (aka libexpat) is vulnerable to a denial of service, caused by a realloc misbehavior issue in the storeAtts function in xmlparse.c

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IBM HTTP Server: CVE-2021-45960: Expat (aka libexpat) is vulnerable to a denial of service, caused by a realloc misbehavior issue in the storeAtts function in xmlparse.c

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
01/01/2022
Created
09/06/2022
Added
08/31/2022
Modified
06/29/2023

Description

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

Solution(s)

  • ibm-http_server-apply-interim-fix-ph43122-for-7_0
  • ibm-http_server-apply-interim-fix-ph43122-for-8_0
  • ibm-http_server-apply-interim-fix-ph43122-for-8_5
  • ibm-http_server-apply-interim-fix-ph43122-for-9_0

References

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