PT-2021-13879 · Resteasy · Resteasy

Jeremy Bonghwan Choi + 1 · Published 2021-06-10 · Updated 2021-09-20 · CVE-2021-20293

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: RESTEasy versions up to 4.6.0.Final

Description: A reflected Cross-Site Scripting (XSS) flaw was found in RESTEasy, where it did not properly handle URL encoding when calling @javax.ws.rs.PathParam without any @Produces MediaType. This flaw allows an attacker to launch a reflected XSS attack, posing a threat to data confidentiality and integrity.

Recommendations: For versions up to 4.6.0.Final, update to a version later than 4.6.0.Final to resolve the issue. As a temporary workaround, consider restricting the use of @javax.ws.rs.PathParam without any @Produces MediaType to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-20293

GHSA-5H26-C766-G93V

Affected Products

Resteasy

References · 9

• https://osv.dev/vulnerability/GHSA-5h26-c766-g93v · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-20293 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20293 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20293 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-20293 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1942819 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-20293 · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20210727-0005 · Note
• https://t.me/cvenotify/16076 · Telegram Post