#VU36684 Improper Privilege Management in Karaf - CVE-2018-11786
Vulnerability identifier: #VU36684
Vulnerability risk: High
CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID:
CWE-ID:
CWE-269
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Karaf
Server applications /
Application servers
Vendor: Apache Foundation
Description
The vulnerability allows a remote authenticated user to execute arbitrary code.
In Apache Karaf prior to 4.2.0 release, if the sshd service in Karaf is left on so an administrator can manage the running instance, any user with rights to the Karaf console can pivot and read/write any file on the file system to which the Karaf process user has access. This can be locked down a bit by using chroot to change the root directory to protect files outside of the Karaf install directory; it can be further locked down by defining a security manager policy that limits file system access to those directories beneath the Karaf home that are necessary for the system to run. However, this still allows anyone with ssh access to the Karaf process to read and write a large number of files as the Karaf process user.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Karaf: 4.0.0 - 4.0.10, 4.1.0 - 4.1.7
External links
https://karaf.apache.org/security/cve-2018-11786.txt
https://issues.apache.org/jira/browse/KARAF-5427
https://lists.apache.org/thread.html/5b7ac762c6bbe77ac5d9389f093fc6dbf196c36d788e3d7629e6c1d9@%3Cdev.karaf.apache.org%3E
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
