XML External Entity (XXE) Injection Affecting expat package, versions <2.2.7-r0


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    58.2% (98th percentile)

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  • Snyk ID SNYK-ALPINE316-EXPAT-2842126
  • published 24 Jun 2019
  • disclosed 24 Jun 2019

How to fix?

Upgrade Alpine:3.16 expat to version 2.2.7-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:3.16 relevant fixed versions and status.

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

References

CVSS Scores

version 3.1
Expand this section

NVD

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

Red Hat

7.5 high