XXE in Xmlsec Project
CVE-2016-9318
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.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.029 (86.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Xmlsec Project
- Xmlsoft Libxml2
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.gnome.org/show_bug.cgi (Patch, VDB Entry, Third Party Advisory, Issue Tracking)
- github.com/lsh123/xmlsec/issues/43 (Exploit, Patch, Third Party Advisory)
- usn.ubuntu.com/3739-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201711-01 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/94347 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3739-2/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/04/msg00004.html (mailing-list)
Frequently asked questions
- What is CVE-2016-9318?
- CVE-2016-9318 is a medium-severity vulnerability in Xmlsec Project, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.5/10. Published 2016-11-16.
- How severe is CVE-2016-9318?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-9318 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.