THREATPORT/VULNERABILITY/CVE-2013-0339
MEDIUM SEVERITY

CVE-2013-0339

Libxml2 vulnerability

CVSS
6.8
EPSS
3.6%
EPSS pct
88th
Exploited
No known
libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader 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 libxml2 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.
Affected vendor
Xmlsoft
Affected product
Libxml2
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness type (CWE)
  • CWE-264 — Permissions, Privileges, and Access Controls
Published
2014-01-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2013-0339

  • Confirm whether Xmlsoft Libxml2 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2013-0339.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-0339

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