THREATPORT/VULNERABILITY/CVE-2016-3705
HIGH SEVERITY

CVE-2016-3705

Ubuntu Linux vulnerability

CVSS
7.5
EPSS
5.1%
EPSS pct
91th
Exploited
No known
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
Affected vendor
Canonical
Affected product
Ubuntu Linux
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2016-05-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 5.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2016-3705

  • Confirm whether Canonical Ubuntu Linux is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-3705.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-3705

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-3705 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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