CVE-2021-30638 An Information Disclosure due to insufficient input validation exists in Apache Tapestry 5.4.0 and later

What is CVE-2021-30638?

CVE-2021-30638 is a high-severity path traversal vulnerability in Apache Tapestry, published on 27 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Information Exposure vulnerability in context asset handling of Apache Tapestry allows an attacker to download files inside WEB-INF if using a specially-constructed URL. This was caused by an incomplete fix for CVE-2020-13953. This issue affects Apache Tapestry Apache Tapestry 5.4.0 version to Apache Tapestry 5.6.3; Apache Tapestry 5.7.0 version and Apache Tapestry 5.7.1.

Weakness: CWE-863, CWE-200

Which versions are affected by CVE-2021-30638?

4 open source packages ship an affected version, including org.apache.tapestry:tapestry-core. It affects 1 product.

Products include Apache Tapestry.

How do I fix CVE-2021-30638?

Upgrade org.apache.tapestry:tapestry-core to a fixed version for your release line: 5.6.4 or 5.7.2.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-30638 being exploited?

There is no known exploitation of CVE-2021-30638 in the wild and no public exploit code.

Other vulnerabilities in Apache Tapestry

• CVE-2022-46366 Apache Tapestry prior to version 4 (EOL) allows RCE though deserialization of untrusted input Critical 9.8
• CVE-2021-27850 Bypass of the fix for CVE-2019-0195 Critical 9.8
• CVE-2020-17531 Deserialization flaw in EOL Tapestry 4. Critical 9.8
• CVE-2019-0195 Deserialization of Untrusted Data in Apache Tapestry Critical 9.8
• CVE-2019-10071 Timing attack on HMAC signature comparison in Apache Tapestry Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-ghm8-mmx7-xvg2.