CVE Vulnerability

CVE-2018-11796

In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://lists.apache.org/thread.html/88de8350cda9b184888ec294c813c5bd8a2081de8fd3666f8904bc05@%3Cdev.tika.apache.org%3E Mailing List Vendor Advisory
http://www.securityfocus.com/bid/105585 Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20190903-0002/
https://access.redhat.com/errata/RHSA-2019:3892
Configurations

Configuration 1

cpe:2.3:a:apache:tika:*:*:*:*:*:*:*:*
Information

Published : 2018-10-09 10:29

Updated : 2019-09-03 06:15

NVD link : CVE-2018-11796

Mitre link : CVE-2018-11796

Products Affected
No products.
CWE
CWE-611

Improper Restriction of XML External Entity Reference