Buffer overflow in Xmlsoft Libxml2
CVE-2017-16931
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.046 (91.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.046 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2017/11/msg00041.html (mailing-list)
- www.oracle.com//security-alerts/cpujul2021.html
- bugzilla.gnome.org/show_bug.cgi (Permissions Required)
- xmlsoft.org/news.html (Release Notes, Vendor Advisory)
- github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3 (Patch, Third Party Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2017-16931?
- CVE-2017-16931 is a critical-severity vulnerability in Xmlsoft Libxml2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-11-23.
- How severe is CVE-2017-16931?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-16931 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.