#VU20404 Improper Authentication in Apache Tapestry - CVE-2019-10071

Vulnerability identifier: #VU20404

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10071

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Tapestry
Web applications / Modules and components for CMS

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the usage of HMACs to verify the integrity of objects stored on the client side. A remote attacker can bypass authentication process, gain unauthorized access to the application and conduct a timing attack in HMAC verification.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Apache Tapestry: 5.3.6 - 5.4.4

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External links
https://lists.apache.org/thread.html/6e8f42c88da7be3c60aafe3f6a85eb00b4f8b444de26b38d36233a43@%3Cusers.tapestry.apache.org%3E
https://seclists.org/oss-sec/2019/q3/169

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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.