Improper Encoding or Escaping of Output Affecting expat package, versions <2.4.5-r0


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.82% (83rd percentile)

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  • Snyk ID SNYK-ALPINE317-EXPAT-3139491
  • published 21 Feb 2022
  • disclosed 16 Feb 2022

How to fix?

Upgrade Alpine:3.17 expat to version 2.4.5-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Alpine. See How to fix? for Alpine:3.17 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

Recommended
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