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XML External Entity (XXE) Injection Affecting expat package, versions *

Severity

 Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.52% (77th percentile)

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  • Snyk ID SNYK-CENTOS6-EXPAT-1943574
  • published 26 Jul 2021
  • disclosed 19 Feb 2013
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Introduced: 19 Feb 2013

CVE-2013-0340 Open this link in a new tab
CWE-611 Open this link in a new tab

How to fix?

There is no fixed version for Centos:6 expat.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

References

CVSS Scores

version 3.1
Expand this section

NVD

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

Red Hat

4.3 medium