Improper Encoding or Escaping of Output Affecting expat-devel package, versions <0:2.2.5-4.el8_5.3


Severity

Recommended
high

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.82% (83rd percentile)

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  • Snyk ID SNYK-ROCKY8-EXPATDEVEL-3277176
  • published 3 Feb 2023
  • disclosed 16 Feb 2022

How to fix?

Upgrade Rocky-Linux:8 expat-devel to version 0:2.2.5-4.el8_5.3 or higher.
This issue was patched in RLSA-2022:0951.

NVD Description

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

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.

CVSS Scores

version 3.1
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NVD

9.8 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)
    High
  • Availability (A)
    High
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SUSE

7.5 high
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Red Hat

9.8 critical