CVE-2016-4483

Libxml2 vulnerability

CVSS

7.5

EPSS

6.2%

EPSS pct

93th

Exploited

No known

The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.

Affected vendor

Xmlsoft

Affected product

Libxml2

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-502 — Deserialization of Untrusted Data

Published

2017-04-11

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 6.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2016-4483

Confirm whether Xmlsoft Libxml2 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-4483.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-4483

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