Integer Overflow Vulnerability in doProlog in Expat (libexpat) before 2.4.3

Integer Overflow Vulnerability in doProlog in Expat (libexpat) before 2.4.3

CVE-2021-46143 · HIGH Severity

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.

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