Vulnerability · Published Jul 13, 2022 · Assigned by apache

CVE-2022-31781Regular Expression Denial of Service (ReDoS) in ContentType.java. (GHSL-2022-022)

High 7.5

In plain English

A high-severity regular-expression denial of service in Apache Tapestry from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.5High

Exploit odds (30 days)2.0%top 19.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Apache Tapestry up to version 5.8.1 is vulnerable to Regular Expression Denial of Service (ReDoS) in the way it handles Content Types. Specially crafted Content Types may cause catastrophic backtracking, taking exponential time to complete. Specifically, this is about the regular expression used on the parameter of the org.apache.tapestry5.http.ContentType class. Apache Tapestry 5.8.2 has a fix for this vulnerability. Notice the vulnerability cannot be triggered by web requests in Tapestry code alone. It would only happen if there's some non-Tapestry codepath passing some outside input to the ContentType class constructor.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.apache.tapestry:tapestry-core	5.8.2	GHSA-227g-7cvv-6ff3

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache Tapestry	5.8.1 – before 5.8.1

Weakness: CWE-1333

References

https://www.openwall.com/lists/oss-security/2022/07/12/3 x_refsource_MISC