CVE-2018-11796
Published: 9 October 2018
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.
Priority
Status
Package | Release | Status |
---|---|---|
tika Launchpad, Ubuntu, Debian |
xenial |
Needed
|
groovy |
Ignored
(end of life)
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
jammy |
Needed
|
|
impish |
Ignored
(end of life)
|
|
lunar |
Not vulnerable
(1.22-2)
|
|
bionic |
Needed
|
|
cosmic |
Ignored
(end of life)
|
|
disco |
Ignored
(end of life)
|
|
eoan |
Ignored
(end of life)
|
|
focal |
Needed
|
|
hirsute |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(1.19.1)
|
|
mantic |
Not vulnerable
(1.22-2)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |