CVE-2017-16931 XML external entity in n/a
An attacker can exploit improper handling of parameter-entity references in libxml2 to cause denial of service or read sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16931?
CVE-2017-16931 is a critical vulnerability in Xmlsoft Libxml2, published on 23 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
Weakness: CWE-119
Which versions are affected by CVE-2017-16931?
It affects 1 product.
Products include Xmlsoft Libxml2.
How do I fix CVE-2017-16931?
Upgrade to a fixed version.
Is CVE-2017-16931 being exploited?
There is no known exploitation of CVE-2017-16931 in the wild and no public exploit code.
Other vulnerabilities in Xmlsoft Libxml2
Sources
Also known as ALPINE-CVE-2017-16931, DEBIAN-CVE-2017-16931, ECHO-b059-acf0-0ac1, GHSA-7mr2-r9fx-7j9m.