Out-of-bounds Write Affecting php-enchant package, versions <0:7.3.20-1.module+el8.2.0+7373+b272fdef


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.5% (77th percentile)

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  • Snyk ID SNYK-CENTOS8-PHPENCHANT-2047276
  • published 26 Jul 2021
  • disclosed 1 Apr 2020

How to fix?

Upgrade Centos:8 php-enchant to version 0:7.3.20-1.module+el8.2.0+7373+b272fdef or higher.

NVD Description

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

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

CVSS Scores

version 3.1
Expand this section

NVD

8.8 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

8.8 high