Vulnerability identifier: #VU21948

Vulnerability risk: High

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-1335

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Tika
Server applications / Other server solutions

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to incorrect processing of HTTP headers. A remote unauthenticated attacker can send specially crafted headers to the affected server and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tika:

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External links
http://packetstormsecurity.com/files/153864/Apache-Tika-1.17-Header-Command-Injection.html
http://lists.apache.org/thread.html/b3ed4432380af767effd4c6f27665cc7b2686acccbefeb9f55851dca@%3Cdev.tika.apache.org%3E
http://www.exploit-db.com/exploits/46540/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.