Incorrect Calculation Affecting expat package, versions <0:2.2.5-4.el8_5.3


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High
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NVD
8.8 high
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SUSE
6.4 medium
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Red Hat
8.8 high

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  • Snyk ID SNYK-CENTOS8-EXPAT-2360498
  • published 25 Jan 2022
  • disclosed 17 Jan 2022

How to fix?

Upgrade Centos:8 expat to version 0:2.2.5-4.el8_5.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Centos:8. See How to fix? for Centos:8 relevant fixed versions and status.

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).