CVE-2016-9318

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-11-16 · updated 2026-10-14
Weakness: CWE-611

Description

libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity (XXE) attacks via a crafted document.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04
xmlsoft libxml2: through 2.9.4

References

http://www.securityfocus.com/bid/94347
https://bugzilla.gnome.org/show_bug.cgi?id=772726
https://github.com/lsh123/xmlsec/issues/43
https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html
https://security.gentoo.org/glsa/201711-01
https://usn.ubuntu.com/3739-1/
https://usn.ubuntu.com/3739-2/
http://www.securityfocus.com/bid/94347
https://bugzilla.gnome.org/show_bug.cgi?id=772726
https://github.com/lsh123/xmlsec/issues/43
https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html
https://security.gentoo.org/glsa/201711-01

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