Vulnerability 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.
CVSS Score
9.8
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xmlsoft | Libxml2 | <= 2.9.4 |
Related Weaknesses (CWE)
References
- http://xmlsoft.org/news.htmlRelease NotesVendor Advisory
- https://bugzilla.gnome.org/show_bug.cgi?id=766956Permissions Required
- https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- http://xmlsoft.org/news.htmlRelease NotesVendor Advisory
- https://bugzilla.gnome.org/show_bug.cgi?id=766956Permissions Required
- https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
- https://www.oracle.com//security-alerts/cpujul2021.html
FAQ
What is CVE-2017-16931?
CVE-2017-16931 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.
How severe is CVE-2017-16931?
CVE-2017-16931 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-16931?
Check the references section above for vendor advisories and patch information. Affected products include: Xmlsoft Libxml2.