National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-9233 Detail

Current Description

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

Source:  MITRE
Description Last Modified:  07/25/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.debian.org/security/2017/dsa-3898
http://www.openwall.com/lists/oss-security/2017/06/17/7 Mailing List VDB Entry
http://www.securityfocus.com/bid/99276 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039427
https://github.com/libexpat/libexpat/blob/master/expat/Changes Release Notes Third Party Advisory
https://libexpat.github.io/doc/cve-2017-9233/ Exploit Technical Description Vendor Advisory
https://support.apple.com/HT208112
https://support.apple.com/HT208113
https://support.apple.com/HT208115
https://support.apple.com/HT208144

Technical Details

Vulnerability Type (View All)

  • Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-9233
NVD Published Date:
07/25/2017
NVD Last Modified:
11/03/2017