Fedora 25 update for jetty, jetty-alpn, jetty-test-helper

1) Brute-force attack

EUVDB-ID: #VU9654

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 - 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

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 25

jetty-test-helper: before 3.1-3.fc25

jetty-alpn: before 8.1.11-2.v20170118.fc25

jetty: before 9.4.6-1.v20170531.fc25

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:jetty-test-helper:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:jetty-alpn:*:*:*:*:*:fedora:*:*
• cpe:2.3:a:fedoraproject:jetty:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2017-03954b6dc4

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.