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


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    1.14% (85th percentile)

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  • Snyk ID SNYK-CENTOS8-GLIBCUTILS-2142154
  • published 26 Jul 2021
  • disclosed 30 Jun 2021

How to fix?

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

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-utils package and not the glibc-utils package as distributed by Centos. 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.

CVSS Scores

version 3.1
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NVD

9.1 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

9.1 critical
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SUSE

5.1 medium