#VU56964 Improper access control in Jetty - CVE-2021-34429
Vulnerability identifier: #VU56964
Vulnerability risk: Medium
CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Jetty
Server applications /
Web servers
Vendor: Eclipse
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 - 9.4.42.v20210604, 10.0.0 - 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
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http://lists.apache.org/thread.html/r029c0c6833c8bb6acb094733fd7b75029d633f47a92f1c9d14391fc0@%3Cnotifications.zookeeper.apache.org%3E
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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
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http://lists.apache.org/thread.html/r9d245c6c884bbc804a472116d730c1a01676bf24f93206a34923fc64@%3Ccommits.kafka.apache.org%3E
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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
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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.
