Out-of-bounds Read Affecting php7.4 package, versions <7.4.3-4ubuntu2.15


Severity

Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.08% (35th percentile)

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  • Snyk ID SNYK-UBUNTU2004-PHP74-3092086
  • published 1 Nov 2022
  • disclosed 14 Nov 2022

How to fix?

Upgrade Ubuntu:20.04 php7.4 to version 7.4.3-4ubuntu2.15 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7.4 package and not the php7.4 package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information.

CVSS Scores

version 3.1
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NVD

7.1 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    High
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SUSE

5.3 medium
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Red Hat

6.5 medium