In Apache FOP before 2.2, files lying on the filesystem of the server which uses FOP can be revealed to arbitrary users who send maliciously formed SVG files. The file types that can be shown depend on the user context in which the exploitable application is running. If the user is root a full compromise of the server - including confidential or sensitive files - would be possible. XXE can also be used to attack the availability of the server via denial of service as the references within a xml document can trivially trigger an amplification attack.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-5661 from the MITRE CVE dictionary dictionary and NIST NVD.
The fop packager is no longer used or required by the Red Hat Virtualization Manager. Red Hat recommends removing it after upgrading to Red Hat Virtualization 4.1.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | None |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | fop | Will not fix |
| Red Hat Software Collections for Red Hat Enterprise Linux | rh-maven33-fop | Will not fix |
| Red Hat JBoss Fuse Service Works 6 | fop | Will not fix |
| Red Hat JBoss Fuse 6 | camel | Will not fix |
| Red Hat Enterprise Linux 7 | fop | Will not fix |
| Red Hat Enterprise Linux 6 | fop | Will not fix |
Vulmon