Information disclosure in Eclipse Jetty

1) Improper access control

EUVDB-ID: #VU56964

Risk: Medium

CVSSv3.1: 7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2021-34429

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper input validation when processing certain characters in URI. A remote attacker can send a specially crafted HTTP request with encoded characters in URI, bypass implemented security restrictions and access content of the WEB-INF directory.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Jetty: 9.4.37.v20210219 - 11.0.5

External links

http://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm
http://lists.apache.org/thread.html/r763840320a80e515331cbc1e613fa93f25faf62e991974171a325c82@%3Cdev.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r7dd079fa0ac6f47ba1ad0af98d7d0276547b8a4e005f034fb1016951@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r90e7b4c42a96d74c219e448bee6a329ab0cd3205c44b63471d96c3ab@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r46f748c1dc9cf9b6c1c18f6b5bfc3a869907f68f72e17666f2f30f24@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r029c0c6833c8bb6acb094733fd7b75029d633f47a92f1c9d14391fc0@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r8e6c116628c1277c3cf132012a66c46a0863fa2a3037c0707d4640d4@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r2a3ea27cca2ac7352d392b023b72e824387bc9ff16ba245ec663bdc6@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rc26807be68748b3347decdcd03ae183622244b0b4cb09223d4b7e500@%3Ccommits.pulsar.apache.org%3E
http://lists.apache.org/thread.html/rb33d65c3e5686f2e3b9bb8a032a44163b2f2ad9d31a8727338f213c1@%3Ccommits.pulsar.apache.org%3E
http://lists.apache.org/thread.html/r9e6158d72ef25077c2dc59fbddade2eacf7d259a2556c97a989f2fe8@%3Ccommits.pulsar.apache.org%3E
http://lists.apache.org/thread.html/r3aefe613abce594c71ace50088d2529bbde65d08b8e7ff2c2723aaa1@%3Cdev.santuario.apache.org%3E
http://lists.apache.org/thread.html/r6e6f50c1ce1fb592cb43e913f5be23df104d50751465f8f1952ace0c@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/r46900f74dbb7d168aeac43bf0e7f64825376bb7eb74d31a5b33344ce@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/r679d96f981d4c92724090ed2d5e8565a1d655a72bb315550489f052e@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/r756443e9d50af7e8c3df82e2c45105f452c8e8195ddbc0c00f58d5fe@%3Ccommits.kafka.apache.org%3E
http://lists.apache.org/thread.html/r9d245c6c884bbc804a472116d730c1a01676bf24f93206a34923fc64@%3Ccommits.kafka.apache.org%3E
http://lists.apache.org/thread.html/r02f940c27e997a277ff14e79e84551382e1081e8978b417e0c2b0857@%3Ccommits.kafka.apache.org%3E
http://lists.apache.org/thread.html/re5e9bb535db779506013ef8799dc2a299e77cdad6668aa94c456dba6@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/r74fdc446df551fe89a0a16957a1bfdaad19380e0c1afd30625685a9c@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/re01890eef49d4201018f2c97e26536e3e75f441ecdbcf91986c3bc17@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/re3de01414ccf682fe0951205f806dd8e94440798fd64c55a4941de3e@%3Cjira.kafka.apache.org%3E
http://lists.apache.org/thread.html/r4727d282b5c2d951057845a46065d59f6e33132edc0a14f41c26b01e@%3Cdev.kafka.apache.org%3E
http://security.netapp.com/advisory/ntap-20210819-0006/
http://lists.apache.org/thread.html/r5678d994d4dd8e7c838eed3bbc1a83a7f6bc62724b0cce67e8892a45@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r2e32390cb7aedb39069e5b18aa130ca53e766258518faee63c31d3ea@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rcb157f55b9ae41b3076801de927c6fca1669c6d8eaf11a9df5dbeb46@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/rcea249eb7a0d243f21696e4985de33f3780399bf7b31ea1f6d489b8b@%3Cissues.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r44ea39ca8110de7353bfec88f58aa3aa58a42bb324b8772512ee190c@%3Ccommits.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r0626f279ebf65506110a897e3a57ccd4072803ee5434b2503e070398@%3Ccommits.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r48a93f2bc025acd7c7e341ed3864bfdeb75f0c768d41bc247e1a1f63@%3Cnotifications.zookeeper.apache.org%3E
http://lists.apache.org/thread.html/r833a4c8bdbbfeb8a2cd38238e7b59f83edd5c1a0e508b587fc551a46@%3Cissues.hbase.apache.org%3E
http://lists.apache.org/thread.html/r721ab6a5fa8d45bec76714b674f5d4caed2ebfeca69ad1d6d4caae6c@%3Cdev.hbase.apache.org%3E
http://lists.apache.org/thread.html/re850203ef8700cb826534dd4a1cb9f5b07bb8f6f973b39ff7838d3ba@%3Cissues.hbase.apache.org%3E

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. However, a fully functional exploit for this vulnerability is available.