Vulnerability Report

CVE-2017-16931

Title: Xmlsoft Libxml2 Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2017-16931.

CWE Category CWE-119

Published Date Nov 23, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 9.8 CVSS v3.0

Exploit Probability (EPSS)

4.28%

Vulnerability Summary

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.

Impacted Vendors

xmlsoft 1

Reference Links

http://xmlsoft.org/news.html https://bugzilla.gnome.org/show_bug.cgi?id=766956 https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3 https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html https://www.oracle.com//security-alerts/cpujul2021.html http://xmlsoft.org/news.html https://bugzilla.gnome.org/show_bug.cgi?id=766956 https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3 https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html https://www.oracle.com//security-alerts/cpujul2021.html

CVSS v3.0

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.5

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns