Security restrictions bypass in Eclipse Jetty

1) Brute-force attack

EUVDB-ID: #VU9654

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-9735

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exists due to a timing channel in util/security/Password.java, which allows a remote attacker to perform a brute-force attack by observing elapsed times before rejection of incorrect passwords.

Mitigation

Update to version 9.4.6.v20170531, 9.3.20.v20170531 or jetty-9.2.22.v20170606.

Vulnerable software versions

Jetty: 9.2.0.v20140526 - 9.4.5.v20170502

External links

http://github.com/eclipse/jetty.project/issues/1556

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.