#VU9654 Brute-force attack in Jetty - CVE-2017-9735

Vulnerability identifier: #VU9654

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-9735

CWE-ID: CWE-208

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jetty
Server applications / Web servers

Vendor: Eclipse

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

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

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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.