7.5
HIGH
CVE-2021-22696
Apache CXF JWT Request URI Pattern Analysis Denial of Service
Description

CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

INFO

Published Date :

April 2, 2021, 10:15 a.m.

Last Modified :

Nov. 7, 2023, 3:30 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-22696 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle business_intelligence
2 Oracle communications_diameter_intelligence_hub
3 Oracle communications_session_report_manager
4 Oracle communications_session_route_manager
5 Oracle communications_element_manager
1 Apache cxf
: Total Affected Vendor : 2 | Products : 6
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-22696.

URL Resource
http://www.openwall.com/lists/oss-security/2021/04/02/2 Mailing List Third Party Advisory
https://cxf.apache.org/security-advisories.data/CVE-2021-22696.txt.asc Vendor Advisory
https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cdev.cxf.apache.org%3E
https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cusers.cxf.apache.org%3E
https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E
https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-22696 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22696 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cdev.cxf.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914%40%3Cusers.cxf.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045%40%3Cannounce.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E [No types assigned]
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cusers.cxf.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cdev.cxf.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4@%3Ccommits.cxf.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045@%3Cannounce.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e@%3Ccommits.cxf.apache.org%3E
  • Modified Analysis by [email protected]

    May. 12, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:communications_element_manager:8.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4.0 *cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4 OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.1.0 *cpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (including) 8.2.3 *cpe:2.3:a:oracle:communications_element_manager:8.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4.0 *cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 10, 2021

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:business_intelligence:5.5.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:5.9.0.0.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.3.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:business_intelligence:12.2.1.4.0:*:*:*:enterprise:*:*:* *cpe:2.3:a:oracle:communications_element_manager:8.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4.0 *cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.2.4
  • CVE Modified by [email protected]

    Oct. 20, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuoct2021.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Jun. 17, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e@%3Ccommits.cxf.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e@%3Ccommits.cxf.apache.org%3E Exploit, Mailing List, Vendor Advisory
    Removed CWE NIST CWE-400
    Added CWE NIST CWE-918
  • CVE Modified by [email protected]

    Jun. 16, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e@%3Ccommits.cxf.apache.org%3E [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 07, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/04/02/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/04/02/2 Mailing List, Third Party Advisory
    Changed Reference Type https://cxf.apache.org/security-advisories.data/CVE-2021-22696.txt.asc No Types Assigned https://cxf.apache.org/security-advisories.data/CVE-2021-22696.txt.asc Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045@%3Cannounce.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045@%3Cannounce.apache.org%3E Mailing List, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cdev.cxf.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cdev.cxf.apache.org%3E Mailing List, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cusers.cxf.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cusers.cxf.apache.org%3E Mailing List, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4@%3Ccommits.cxf.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4@%3Ccommits.cxf.apache.org%3E Mailing List, Vendor Advisory
    Added CWE NIST CWE-400
    Added CPE Configuration OR *cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* versions up to (excluding) 3.3.10 *cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (excluding) 3.4.3
  • CVE Modified by [email protected]

    Apr. 02, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r6445001cc5f9a2bb1e6316993753306e054bdd1d702656b7cbe59045@%3Cannounce.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 02, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/04/02/2 [No Types Assigned]
    Added Reference https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cusers.cxf.apache.org%3E [No Types Assigned]
    Added Reference https://lists.apache.org/thread.html/r8651c06212c56294a1c0ea61a5ad7790c06502209c03f05c0c7c9914@%3Cdev.cxf.apache.org%3E [No Types Assigned]
    Added Reference https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4@%3Ccommits.cxf.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 02, 2021

    Action Type Old Value New Value
    Changed Description CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10. CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-22696 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-22696 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.30 }} -0.03%

score

0.69816

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: