Integer Overflow or Wraparound Affecting glibc-minimal-langpack package, versions <0:2.28-164.el8



    Attack Complexity Low
    Confidentiality High
    Availability High
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9.1 critical
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5.1 medium
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Red Hat
9.1 critical

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  • published 26 Jul 2021
  • disclosed 30 Jun 2021

How to fix?

Upgrade Centos:8 glibc-minimal-langpack to version 0:2.28-164.el8 or higher.

NVD Description

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

The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.