CVE-2022-31781

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.

How to fix CVE-2022-31781

To remediate CVE-2022-31781, upgrade the affected package to a fixed version below.

• —upgrade to 5.8.2 or later

Is CVE-2022-31781 being exploited?

Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 5.8.2

CVSS scores

References (3)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-31781
• WEBgithub.com/apache/tapestry-5/commit/3c8d6103832eec3bc06029dd2532f06df717431f
• WEBwww.openwall.com/lists/oss-security/2022/07/12/3